nanog mailing list archives
RE: Analysis from a JHU CS Prof
From: "Hire, Ejay" <Ejay.Hire () Broadslate net>
Date: Thu, 13 Sep 2001 16:35:14 -0400
The transponders, like most avionics, has a handy-dandy off switch. -----Original Message----- From: Borger, Ben [mailto:bborger () platinumsystems net] Sent: Thursday, September 13, 2001 4:32 PM To: 'nanog () merit edu' Subject: FW: Analysis from a JHU CS Prof
At 06:05 PM 9/12/2001, you wrote: Quite more interesting is why nobody noticed that 4 airliners where
hijacked
almost the same time.Not surprising. Aircraft are "flight followed" by a series of control centers across the nation, each responsible for a given chunk of airspace. Something happening in an area controlled by Center "A", for example, wouldn't be passed on to Center "B" (which has it's own problems to work) unless it impacted Center "B". Furthermore, unless someone TELLS Center they're being hijacked, there's no way for a controller - looking at
a blip - to know what's up. And any controller can tell you that pilots do
Somehow the people who did this managed to turn off the transponders on these planes. Normally a plane flying in controlled airspace squawks a unique id and altitude which is decoded by their radar and associated with each blip. Sometimes low cost homebuilts/ultralights fly with no transponder, but Boeings <sarcasm>usually</sarcasm> do. If you set a transponder to 7500, it means you're being hijacked. BTW if you see your friend Jack at the airport, be sure to say, "What's up, Jack!" instead of "Hi Jack!" So how do you deal with this? Blowing up a whole country? I wonder if the US should adopt a 'fire w/ fire' approach and invest in intelligence, covert ops and assassinations. It would seem that it is open season on terrorism by every democratic nation, I expect to see very conspicuous Samuel Jackson style ass whoopins on whiny extremist groups to satiate America's anger. Terrorize the terrorists. Oh yeah, obviously Echelon should probably have MacOS loaded on it. -b
Current thread:
- RE: Analysis from a JHU CS Prof, (continued)
- RE: Analysis from a JHU CS Prof Borchers, Mark (Sep 13)
- FW: Analysis from a JHU CS Prof Borger, Ben (Sep 13)
- RE: Analysis from a JHU CS Prof Leigh Anne Chisholm (Sep 13)
- Re: Analysis from a JHU CS Prof Jeff Mcadams (Sep 13)
- RE: Analysis from a JHU CS Prof Deepak Jain (Sep 13)
- Re: Analysis from a JHU CS Prof Joel Baker (Sep 13)
- RE: Analysis from a JHU CS Prof Matt Levine (Sep 13)
- RE: Analysis from a JHU CS Prof John Fraizer (Sep 13)
- RE: Analysis from a JHU CS Prof Leigh Anne Chisholm (Sep 13)
- Re: Analysis from a JHU CS Prof Owen DeLong (Sep 13)
- Re: FW: Analysis from a JHU CS Prof Majdi S. Abbas (Sep 13)
- RE: Analysis from a JHU CS Prof Matt Levine (Sep 13)
- RE: Analysis from a JHU CS Prof Mikael Abrahamsson (Sep 13)
- RE: Analysis from a JHU CS Prof Leigh Anne Chisholm (Sep 13)
- Re: Analysis from a JHU CS Prof Owen DeLong (Sep 13)