And lets not forget about the bazillion of cases of air rage these days too. The airlines run courses on dealing with abusive passengers for their employees, keep plastic handcuffs on board planes, and actively encourage flight crew to report incidents to the police. So what happened here? How did the marshalls become involved in this to begin with?

Delays and lack of information, long, slow lines and cramped seating in economy class are enough to drive even the most placid traveller to despair. It just gets worse in winter, because of weather delays. Frustrations mount quickly--I've seen it happen many times travelling, and not just by air. Historically, people claiming to have bombs in airports or on planes are arrested and prosecuted, not shot.

I don't trust ANYONE whose first impulse/knee jerk reaction is to kill a citizen first, ask questions later. Not law enforcement, not my fellow citizens.