It’s flying bus that a) can be rather easily converted to a missile, and b) is sealed until it touches down so any craziness is locked in for hours possibly.

I’m more comfortable as a flyer and as someone who’d like to do business in the US if I know that there are air marshals. Surely this pays for itself this way, especially given the ever increasing accessibility of air travel. I say this an American who knows how crazy our population can be.