hold on though...maybe we shoud'nt knock these ridiculous ideas so quickly.
lets see.
now..if we get rid of the crew..that way there is no one to threaten.
then we have airliners that are programmed to only to one location at a time..that way it can't be interfered with.
of course it would have to be able to divert to an alternate...but what if for some reason it was closed....then peolpe would just have to stay up there..???
no, no that would'nt work...
oh well back to the drawing board.....