[supercat]

A crew member showing off for a new acquaintance, a new acquaintance feigning some distress to draw the pilot out to comfort her.

Yes, well that's what training is for--to resist such things.

[bvw]

The sexual attraction is designed to be very very difficult to resist.

[bvw]

The locked cockpit door is a single point of failure. One sky marshal is a single point of failure. Redundant systems, able to work even given one failure, two failures, three failures even, are preferred. The gist: arm the crews and secure the cockpit. That gives a protection layer from three-plus coincidental failures.