CS gives a kind of virtual freedom that captivates the person and time passes by fast. The sames true with MMORPGs but in a different way. I could see CS kiosks in mental institutions with patients fragging the hell online players and being regular clanmembers. Much better than staring at the blank walls and flat nurses anyway.
CS also makes for an excellent relief of anger and control, and it takes mental energy to really own a good team. Such exercises, if not portrayed too violent, could improve the quality of life for the casterated ones among us.
The fact that the economy is crap is exactly why the governments should push for ipv6. The resulting sales of software and hardware to the companies will create a small economic boom.
And yes we dont need 100 IP addesses each since 1 megabyte of RAM is all we need right now. I dont mind my watch transferring the latest news from my friend's watch in the wilderness while my glasses stream the data in to display it. Sometimes I do think ipv6 has too many addresses and can be less bloated in the header(how many thousands of IP addresses can each person use if the population was 100 billion?), but anything is better than the pinch of ipv4 right now especially in asian countries where the geeks cannot run their own apache servers.
What we have is a filesystem that is much more complicated in usage and concept. You can no longer see/usr/local/etc/apache.conf and know which parts are directories and which one is a flat configuration file. A database in one big file that is sitting in a standard filesystem is much more usable and easy to work with than the proposed solution.
Well its kinda tough on a student building a personal project to work like an engineers efficiency, I should also goto IDC type oganizations to pick my OS rather than settle on my fav Linux. If I were to ship it out an assembly line and have the companys name and budget, I'd gather a team and research each of these constraints, but as a student designer, I think I'll just see what the industry trends are, what captivates me, whats accessable and easy to work with so I'll be in a good position by the time I'm hired. Till then, I think I'll rip out the LCD for a CRT because a geeky slashdot kid like me doesnt know the difference eh?
ARM is the middle of the pack in efficiency? I didnt know that. I'm basing my designs on ARM for the reason of its power consumption/performance and its die size (core is 3mm^2 !!). That was the reason I bypassed PPC MIPS and the rest, because theyve always been big powerful chips not suitable for an mp3 player running on 2 AA batteries, but of course I never had the time or motivation to pull out datasheets and compare the numbers for these architectures.
Does anyone know of the lowest power consuming 32-bit MPU of all? Isnt it some stripped down MPU based on ARM7TDMI with.13 u fab?
I wonder if a compiler can compile code so it sets up the array for an important loop, so rather than setting up the FPGA for each arch type, it changes on the fly for each function or application.
Ive seen the ARM7 MCUs that have a large FPGA array incorporated next to it. If such compilers exist, we have a pretty nice cpu+gpu implementation.
FPGAs would always be slower, more power-hungry and require more transistors than other RISC processors at the same cost. Economically, one vendor would release a "standard" architecture, all developers would aim for that platform and the software base would require everyone to use that architecture. This is true of the x86, and to a lesser extent the powerpc, sparc and 68060. If an FPGA chip can "become" any of these chips at a minimal loss of performance, there is great business potential, but theres greater business potential in selling a proprietary architecture, setting up a software base around it and forcing the consumers to upgrade to only your chips.
They also have a SiS 550 SoC which is a processor + chipset, basically an entire mobo and processor in one chip at $35 a piece. Add 128mb ram, a cheap 10GB seagate hdd and an 800x600 LCD, and you have around $200 laptop. Such a beast would work well with KDE and Linux and would sell well.
You can get 16 speed pci tr cards for $2, and their 24-port switches for $14. Now do you see all the 'student' linux users with cheap homelans and throwaway 486 computers using tokenring?
TokenRing is far from dead. Its only not talked much about. Heck I even use Arcnet and am proud of it.:)
Linux's tokenring support is broken when you route multiple ethernets and one tokenring card in one box. I tried the 2.2, 2.4.20, 2.5.67 but after some heavy duty routing using SNAT with ipfilters the thing crashes on multiple test machines with different tr cards. Ive tried the olicom tr for the FreeBSD 4.7 and that crashes with heavy traffic too.
I'm completely stuck with a demo version of Solaris 8.0 x86 for that purpose.
Part of the reason why Linux is in a better market position than FreeBSD is the range of hardware supported by Linux. For instance FreeBSD supports only two ATM cards and no Tokenring cards, while people have done fancy things using Linux with both networks.
Cheap energy sounds great with great possibilities, and with some effort from the society might even be possible. Imagine electric cars more powerful than gas ones running off almost nothing.
But things work much better with efficiency. If you eat only as much as you need to, you'd look great. People buy centrino and transmeta laptops because they run longer on the same battery than an Athlon Thunderbird. Making living quarters as small as possible and stacking them has made the manhattan possible and pushing chip sizes down has turned the IBM S/390's power into a PDA. Do you want to upgrade the hardware for your server so it can run Windows 2003 or just replace it with FreeBSD??
We're already guzzling collosal amounts of energy and for one species, we're amazing in how we are altering weather with our endless consumption. Think of all the cars on the highways in the morning rushhour. Only the people need to be transported, yet many seats in each car goes empty, and fossil fuels are used up to carry that huge hunk of metal with its gases causing so much smog it blocks your view.
Maybe some computer guy dreamt in the 70s working on mainframes, about acres of mainframes pushing pixels so he could play a very cool 3d game at high resolutions with reflections. Arent the modern 3d chips a better solution? You get the idea.
Your cargo ships could be flinging themselves among orbits, but localized manufacturing with no need to transport anything is better. Fusion power will eventually come, but even the number of deuterium on earth is finite, and I believe once the process becomes practical, applications requiring huge amounts of energy will appear fast, and before you know it, future Bushes will be attacking future Iraqs for deuterium.
Any society that can live without, will survive. Others will just squeeze their planets till it is no more.
When you have to ask slashdot for a package manager for your unix, that unix is dead. There are other dead unices like SCO unixware xenix (if you can count that) and of course the old sysv and the likes, sitting on some companies shelves rotting away. They could do great service by releasing them opensourced so development on the can start.
If they really want to keep a hold onto them, they can do what Sun did with Solaris, release free x86 binaries (free for usage not alteration and distribution) and support free software developed for it. The key part of such success is releasing the associated developer tools with it for free usage too (Sun was late with Forte). One of the first things the GNU foundation did was develop gcc, libc, make and port it to many platforms. The rest of the developers followed suit.
So now the weak SGI should really do the same with IRIX maybe release a free version like Darwin by Apple to attract software and improvements and eyeballs to revamp their OS for free. Opensourcing Irix will go a long way in improving Irix (and Linux and FreeBSD), which will sell the SGI platforms well. They wont have to resort to Linux on the x86 and die a painful death.
I'm not against Linux, but I dont want to see Linux killing powerful potent companies. Linux should really augument them(maybe with some progressive competition), while these companies should use Linux like IBM to sell their products as well as improvise on their applications.
Steve Jobs still doesnt quite realize the importance of a software base for the Apple. By leaving the market to others, they can be a bigger player, and always be able to roll out their own anytime in the future. Instead they keep trying to be an all-in-one company.
Even Suns beginning to learn IBMs original idea of outsourcing software, then hardware like they did to the 8086. All other hardware + software proprietary computer makers are going out of business and while many Taiwanese are getting rich off the x86, IBM lives on and keeps growing bigger.
That said, Adobe shouldnt try to use their mac market presence as threats to keep their markets good. They should look at raw profits instead.
The punk, the geek and the irony
on
dB Drag Racing
·
· Score: 1
So the punk kid is feeling good and cranks up more garbage on his civic with blue lights reflecting underneath. His bright yellow dash is blocked by his sunglasses. He pulls next to some geeky kid on a red light in a toyota corolla 1991 and tries to focus on the group of girls on the sidewalk.
Then the unthinkable happens. The geeky kid in big round glasses looks at the punk kid, gives a quick smile full of contempt and turns away. The gauntlet has been thrown for the punk kid.
So he rolls down all windows and cranks up the gangsta rap to illegal decibel levels hoping to inflict pain and torture on his contender. Suddenly all attention at the crossing is focused on the battle that enrages.
The geeky kid gives another smile despite the pain threshold, and turns on his very own techno. And then, he turns it up. A few notches along, he opens the glove compartment and wears a defensive headset ready for the blastoff to space. He also rolls down all his windows to make sure they dont break, and pumps up the volume till a few windows in the surrounding buildings break. The punk screams in pain and runs the light, his tail between his legs.
Next issue: The loud barney song as torture in Guantanamo Bay and Iraq in search of the ever-elusive WMDs
On an ARM7 you can run Linux given a few more megabytes of space which couldnt be expensive or bulky. Considering the number of things you can do with Linux, its probably worth it.
I'm really wondering if I can pay to launch a small satellite with a tiny laser pointer that can point on various ground locations, and have it point close to me, and watch the spot on the ground at night.
You are asking for a zero G drive system. Zero G is no gravitational forces... so what is the problem?
If a drive can be mounted in ANY direction, it can take 1 G in any direction, and certainly zero Gs which is easier than the 1Gs most drives experience. If youre asking for zero Gs, youre launching the drives into space arent you? If so, shouldnt you be worried about the Gs during takeoff??? So shouldnt you be asking about say 100Gs while off, instead of 0 Gs which ANY working drive in the world can take?
The sames true of RAID hardware or system with software raid. Generally ciruit boards can take as many Gs as its fibreglass structure can take (assuming the heatsinks and capacitors arent too big. Make sure you screw every hole in the motherboard down and the case should be rigid enough not to bend, but not rigid as the Titanic.
And like another poster commented, you should be worried about the radiation levels and be making sure theres about 1 atmospheric pressure on all components unless you want exploding capacitors. Worry also about the temperature and make sure theres no humidity in the chamber and theres good insulation all around. I would strongly suggest you go with a system-on-chip with flash drives unless you need space because you want to boot windows 2003 with sql 2000. Worry also about vibrations during takeoff unless your zero Gs are in a 747 in a nosedive.
Take a long flat piece of aluminium bar. Bolt one end into the inside of the AP possibly on top of the hottest chips (will need to drill a hole or slot in the side) and the other end of the bar is bolted on a water pipeline or metal structure of the building that runs through the concrete. This makes your router VERY immobile.
I'm betting youll find an easier way like placing the router in a cooler place, but I just needed to throw in this possibility.
Well that sounds reasonable, make sure you clarify maintenance is not covered. I repair computers for some people and buy some for others. They all run to me screaming if something breaks regardless of what the SLA says, so I have to lay down the maintenance responsibilities at the time of purchase. Turning down support on a dysfunctional phone system when the whole company is not functioning because of it is difficult because youre then part of the company.
Ive seen other sysadmins who really spend all their time sysadmining, but are HELD responsible if a phone system breaks. Just some of my concerns and opinions out of experience.
Ive shipped or helped ship computers between Pakistan and Canada, and for most people I recommend packing the harddisk in his suitcase between layers of clothing, while sending the case throught the cheapest shipping method. I personally pack the harddisk, video card and memory chips in the suitcase in case the case gets lost along the way, and the rest is just shipped via normal postal services.
Theres little point in paying for the expensive shipment of the whole systems weight while the only part to really protect is a small harddisk.
The economy is making more sysadmins these days to provide cabling and phone support as well. Only playing with a phone exchange is very different from making scripts for cron in Solaris or AIX. Did you agree with them installation and maintenance of the phone system is part of your work or are they pushing you to do it? There are phone support companies who specialize in these things and work in parallel with the System/Network Administrator.
If you are supporting the phone system, make sure youre called System Administrator/Phone Technician, so that such services arent defined to be part of the Sysadmin. And make sure you get paid for it too.
Some games have been spoiled this way like the Monkey Island RPG series, which ended with version 4 being made in 3d for no reason and therefore is unplayable. Other games have strived to use every feature of the ATI and NVidia cards.
The older games have really been revived, especially the console games since they interfaced with very standardized hardware thats easy to emulate. The SNES and Genesis are the most common, with hundereds of games that are less than 4mb per image. Some emulators even allow two players to play over a network but I havent seen good latencies with those.
There are also those 'abandonware' old PC games, for which people really need hardware soundblaster emulation, or an ISA creative card. The software emulation just doesnt work. Its sad to see companies not making and selling these games anymore yet theyre still illegal to copy. Theres just no way for an obsessed gamer to get one legally.
Am I the only one who feels the rocket should have done better than 6000 feet? In the highest amateur rocket records,Ive seen 30 kilometers for about the same size of a rocket. Maybe that was liquid propelled and multistaged.
It was impressive though and looked like an anti aircraft missile.
Slashdot Mirror
CS gives a kind of virtual freedom that captivates the person and time passes by fast. The sames true with MMORPGs but in a different way. I could see CS kiosks in mental institutions with patients fragging the hell online players and being regular clanmembers. Much better than staring at the blank walls and flat nurses anyway.
CS also makes for an excellent relief of anger and control, and it takes mental energy to really own a good team. Such exercises, if not portrayed too violent, could improve the quality of life for the casterated ones among us.
The fact that the economy is crap is exactly why the governments should push for ipv6. The resulting sales of software and hardware to the companies will create a small economic boom.
And yes we dont need 100 IP addesses each since 1 megabyte of RAM is all we need right now. I dont mind my watch transferring the latest news from my friend's watch in the wilderness while my glasses stream the data in to display it. Sometimes I do think ipv6 has too many addresses and can be less bloated in the header(how many thousands of IP addresses can each person use if the population was 100 billion?), but anything is better than the pinch of ipv4 right now especially in asian countries where the geeks cannot run their own apache servers.
What we have is a filesystem that is much more complicated in usage and concept. You can no longer see /usr/local/etc/apache.conf and know which parts are directories and which one is a flat configuration file. A database in one big file that is sitting in a standard filesystem is much more usable and easy to work with than the proposed solution.
I wish the native format of OO was DocBook XML. There are so many possibilities. And even the current implementation isnt too stable and complete.
Well its kinda tough on a student building a personal project to work like an engineers efficiency, I should also goto IDC type oganizations to pick my OS rather than settle on my fav Linux. If I were to ship it out an assembly line and have the companys name and budget, I'd gather a team and research each of these constraints, but as a student designer, I think I'll just see what the industry trends are, what captivates me, whats accessable and easy to work with so I'll be in a good position by the time I'm hired. Till then, I think I'll rip out the LCD for a CRT because a geeky slashdot kid like me doesnt know the difference eh?
ARM is the middle of the pack in efficiency? I didnt know that. I'm basing my designs on ARM for the reason of its power consumption/performance and its die size (core is 3mm^2 !!). That was the reason I bypassed PPC MIPS and the rest, because theyve always been big powerful chips not suitable for an mp3 player running on 2 AA batteries, but of course I never had the time or motivation to pull out datasheets and compare the numbers for these architectures.
Does anyone know of the lowest power consuming 32-bit MPU of all? Isnt it some stripped down MPU based on ARM7TDMI with
I wonder if a compiler can compile code so it sets up the array for an important loop, so rather than setting up the FPGA for each arch type, it changes on the fly for each function or application.
Ive seen the ARM7 MCUs that have a large FPGA array incorporated next to it. If such compilers exist, we have a pretty nice cpu+gpu implementation.
FPGAs would always be slower, more power-hungry and require more transistors than other RISC processors at the same cost. Economically, one vendor would release a "standard" architecture, all developers would aim for that platform and the software base would require everyone to use that architecture. This is true of the x86, and to a lesser extent the powerpc, sparc and 68060. If an FPGA chip can "become" any of these chips at a minimal loss of performance, there is great business potential, but theres greater business potential in selling a proprietary architecture, setting up a software base around it and forcing the consumers to upgrade to only your chips.
They also have a SiS 550 SoC which is a processor + chipset, basically an entire mobo and processor in one chip at $35 a piece. Add 128mb ram, a cheap 10GB seagate hdd and an 800x600 LCD, and you have around $200 laptop. Such a beast would work well with KDE and Linux and would sell well.
I know I'll buy at least two of em.
You can get 16 speed pci tr cards for $2, and their 24-port switches for $14. Now do you see all the 'student' linux users with cheap homelans and throwaway 486 computers using tokenring?
:)
TokenRing is far from dead. Its only not talked much about. Heck I even use Arcnet and am proud of it.
Linux's tokenring support is broken when you route multiple ethernets and one tokenring card in one box. I tried the 2.2, 2.4.20, 2.5.67 but after some heavy duty routing using SNAT with ipfilters the thing crashes on multiple test machines with different tr cards. Ive tried the olicom tr for the FreeBSD 4.7 and that crashes with heavy traffic too.
I'm completely stuck with a demo version of Solaris 8.0 x86 for that purpose.
Part of the reason why Linux is in a better market position than FreeBSD is the range of hardware supported by Linux. For instance FreeBSD supports only two ATM cards and no Tokenring cards, while people have done fancy things using Linux with both networks.
Cheap energy sounds great with great possibilities, and with some effort from the society might even be possible. Imagine electric cars more powerful than gas ones running off almost nothing.
But things work much better with efficiency. If you eat only as much as you need to, you'd look great. People buy centrino and transmeta laptops because they run longer on the same battery than an Athlon Thunderbird. Making living quarters as small as possible and stacking them has made the manhattan possible and pushing chip sizes down has turned the IBM S/390's power into a PDA. Do you want to upgrade the hardware for your server so it can run Windows 2003 or just replace it with FreeBSD??
We're already guzzling collosal amounts of energy and for one species, we're amazing in how we are altering weather with our endless consumption. Think of all the cars on the highways in the morning rushhour. Only the people need to be transported, yet many seats in each car goes empty, and fossil fuels are used up to carry that huge hunk of metal with its gases causing so much smog it blocks your view.
Maybe some computer guy dreamt in the 70s working on mainframes, about acres of mainframes pushing pixels so he could play a very cool 3d game at high resolutions with reflections. Arent the modern 3d chips a better solution? You get the idea.
Your cargo ships could be flinging themselves among orbits, but localized manufacturing with no need to transport anything is better. Fusion power will eventually come, but even the number of deuterium on earth is finite, and I believe once the process becomes practical, applications requiring huge amounts of energy will appear fast, and before you know it, future Bushes will be attacking future Iraqs for deuterium.
Any society that can live without, will survive. Others will just squeeze their planets till it is no more.
When you have to ask slashdot for a package manager for your unix, that unix is dead. There are other dead unices like SCO unixware xenix (if you can count that) and of course the old sysv and the likes, sitting on some companies shelves rotting away. They could do great service by releasing them opensourced so development on the can start.
If they really want to keep a hold onto them, they can do what Sun did with Solaris, release free x86 binaries (free for usage not alteration and distribution) and support free software developed for it. The key part of such success is releasing the associated developer tools with it for free usage too (Sun was late with Forte). One of the first things the GNU foundation did was develop gcc, libc, make and port it to many platforms. The rest of the developers followed suit.
So now the weak SGI should really do the same with IRIX maybe release a free version like Darwin by Apple to attract software and improvements and eyeballs to revamp their OS for free. Opensourcing Irix will go a long way in improving Irix (and Linux and FreeBSD), which will sell the SGI platforms well. They wont have to resort to Linux on the x86 and die a painful death.
I'm not against Linux, but I dont want to see Linux killing powerful potent companies. Linux should really augument them(maybe with some progressive competition), while these companies should use Linux like IBM to sell their products as well as improvise on their applications.
Steve Jobs still doesnt quite realize the importance of a software base for the Apple. By leaving the market to others, they can be a bigger player, and always be able to roll out their own anytime in the future. Instead they keep trying to be an all-in-one company.
Even Suns beginning to learn IBMs original idea of outsourcing software, then hardware like they did to the 8086. All other hardware + software proprietary computer makers are going out of business and while many Taiwanese are getting rich off the x86, IBM lives on and keeps growing bigger.
That said, Adobe shouldnt try to use their mac market presence as threats to keep their markets good. They should look at raw profits instead.
So the punk kid is feeling good and cranks up more garbage on his civic with blue lights reflecting underneath. His bright yellow dash is blocked by his sunglasses. He pulls next to some geeky kid on a red light in a toyota corolla 1991 and tries to focus on the group of girls on the sidewalk.
Then the unthinkable happens. The geeky kid in big round glasses looks at the punk kid, gives a quick smile full of contempt and turns away. The gauntlet has been thrown for the punk kid.
So he rolls down all windows and cranks up the gangsta rap to illegal decibel levels hoping to inflict pain and torture on his contender. Suddenly all attention at the crossing is focused on the battle that enrages.
The geeky kid gives another smile despite the pain threshold, and turns on his very own techno. And then, he turns it up. A few notches along, he opens the glove compartment and wears a defensive headset ready for the blastoff to space. He also rolls down all his windows to make sure they dont break, and pumps up the volume till a few windows in the surrounding buildings break. The punk screams in pain and runs the light, his tail between his legs.
Next issue: The loud barney song as torture in Guantanamo Bay and Iraq in search of the ever-elusive WMDs
On an ARM7 you can run Linux given a few more megabytes of space which couldnt be expensive or bulky. Considering the number of things you can do with Linux, its probably worth it.
I'm really wondering if I can pay to launch a small satellite with a tiny laser pointer that can point on various ground locations, and have it point close to me, and watch the spot on the ground at night.
You are asking for a zero G drive system. Zero G is no gravitational forces... so what is the problem?
If a drive can be mounted in ANY direction, it can take 1 G in any direction, and certainly zero Gs which is easier than the 1Gs most drives experience. If youre asking for zero Gs, youre launching the drives into space arent you? If so, shouldnt you be worried about the Gs during takeoff??? So shouldnt you be asking about say 100Gs while off, instead of 0 Gs which ANY working drive in the world can take?
The sames true of RAID hardware or system with software raid. Generally ciruit boards can take as many Gs as its fibreglass structure can take (assuming the heatsinks and capacitors arent too big. Make sure you screw every hole in the motherboard down and the case should be rigid enough not to bend, but not rigid as the Titanic.
And like another poster commented, you should be worried about the radiation levels and be making sure theres about 1 atmospheric pressure on all components unless you want exploding capacitors. Worry also about the temperature and make sure theres no humidity in the chamber and theres good insulation all around. I would strongly suggest you go with a system-on-chip with flash drives unless you need space because you want to boot windows 2003 with sql 2000. Worry also about vibrations during takeoff unless your zero Gs are in a 747 in a nosedive.
You dont. you screw it inside the floor of the case, I had seen the same holes that are used to screw the motherboard in. I never said it was easy.
Or practical.
I read someone had done this for his desktop pc..
Take a long flat piece of aluminium bar. Bolt one end into the inside of the AP possibly on top of the hottest chips (will need to drill a hole or slot in the side) and the other end of the bar is bolted on a water pipeline or metal structure of the building that runs through the concrete. This makes your router VERY immobile.
I'm betting youll find an easier way like placing the router in a cooler place, but I just needed to throw in this possibility.
Well that sounds reasonable, make sure you clarify maintenance is not covered. I repair computers for some people and buy some for others. They all run to me screaming if something breaks regardless of what the SLA says, so I have to lay down the maintenance responsibilities at the time of purchase. Turning down support on a dysfunctional phone system when the whole company is not functioning because of it is difficult because youre then part of the company.
Ive seen other sysadmins who really spend all their time sysadmining, but are HELD responsible if a phone system breaks. Just some of my concerns and opinions out of experience.
Ive shipped or helped ship computers between Pakistan and Canada, and for most people I recommend packing the harddisk in his suitcase between layers of clothing, while sending the case throught the cheapest shipping method. I personally pack the harddisk, video card and memory chips in the suitcase in case the case gets lost along the way, and the rest is just shipped via normal postal services.
Theres little point in paying for the expensive shipment of the whole systems weight while the only part to really protect is a small harddisk.
The economy is making more sysadmins these days to provide cabling and phone support as well. Only playing with a phone exchange is very different from making scripts for cron in Solaris or AIX. Did you agree with them installation and maintenance of the phone system is part of your work or are they pushing you to do it? There are phone support companies who specialize in these things and work in parallel with the System/Network Administrator.
If you are supporting the phone system, make sure youre called System Administrator/Phone Technician, so that such services arent defined to be part of the Sysadmin. And make sure you get paid for it too.
Some games have been spoiled this way like the Monkey Island RPG series, which ended with version 4 being made in 3d for no reason and therefore is unplayable. Other games have strived to use every feature of the ATI and NVidia cards.
The older games have really been revived, especially the console games since they interfaced with very standardized hardware thats easy to emulate. The SNES and Genesis are the most common, with hundereds of games that are less than 4mb per image. Some emulators even allow two players to play over a network but I havent seen good latencies with those.
There are also those 'abandonware' old PC games, for which people really need hardware soundblaster emulation, or an ISA creative card. The software emulation just doesnt work. Its sad to see companies not making and selling these games anymore yet theyre still illegal to copy. Theres just no way for an obsessed gamer to get one legally.
Am I the only one who feels the rocket should have done better than 6000 feet? In the highest amateur rocket records,Ive seen 30 kilometers for about the same size of a rocket. Maybe that was liquid propelled and multistaged.
It was impressive though and looked like an anti aircraft missile.