[First_Salute]

My selection for a recent flight, was a golf ball, a pen, and a metallic penlight.

The golf ball makes a good "brass knuckle," or you can throw it at the hijacker.

The penlight contains batteries which you can throw at the attacker; and then you crush the open end of the [then empty] metallic flashlight and thus have a crude knife edge.

And finally, the pen, as usefully mentioned in previous replies above.

I boarded the aircraft, prepared for combat: there is only one kind of a hijacker, a dead one.

[shadowcat]

I carry a gym sock and a roll of quarters in my computer carry-on!