And the hijacking scenario this supports is what? In the dark rear galley of a red-eye, you lie in wait, immobilizing one flight attendant at a time, hog-tying their hands and feet with strings of zip-ties while stuffing your dirty socks, then napkins, in their mouths so they don't alert the others. Once all the flight attendants are processed, as they come back one at a time to see why they haven't seen their co-workers for a while, then you creep forward, zip-tying each aisle passenger to their seat arms as they sleep on this mythical red-eye. And then you reach the cockpit door with a plane-full of immobilized human cargo, you inspect the armored door, and exclaim: "THWARTED AGAIN!!!" in impotent rage.

Really? What sort of pulp fiction writers does DHS have on staff to dream this crap up?