And there are only 2 kinds of flight attendants out of National - fat old women with attitudes and young macho gay men. They would take anyone suspicious down before the Air Marshal could reach the seat.
If someone stands up 30 minutes from National, they are given one shouting warning, then they get trampled. You get told that if you have to take a dump, do it before the plane goes off - or do it in your pants - if you want to land alive.