Crypto relevance: none.
I remember back during one of the previous FAA panics over terrorism. I was at the Portland airport discussing the measures with an FAA inspector. He explained why they had to have all the searches and stuff to stop anyone from blowing up the plane. I pointed out to him that if anyone wanted to do that, they would just lay off a line of mortars from the hills overlooking the airport across the river. He got very quiet and very worried...
Heh, one of our products gets a direct feed from the radar and flight track info and displays it on a real time screen showing planes, noise levels and other cutesy stuff in 3d. This sort of thing would be picked up and you could replay over and over the dot of the mortar hitting the plane, or a SAM missile coming up to the plane and both falling to the ground. Normal use is for telling off pilots for flying outside the environmental guidelines, or attaching resident complaints to flights but we have the odd scare sitting in the databases. Problem is (??) that since Australia has such high safety standards, we have to get all the booboo's from our international sites. Cheers, Mark mark@lochard.com.au