I sympathize with RKBA, but I draw the line on airplanes. Your average permit holder shouldn't be able to carry a gun onto a plane where he/she'd have a captive group of 50-400 people at the potential point of a gun, and the use of a massive, directable bomb at his/her disposal.
If your answer is that some *other* permit holder would draw to counter terrorism, I'd point out that an airplane is not the ideal place for a shootout.
What to do:
1- Keep all weapons out of the cabin, as far as possible
2- Have a trained air marshal service (don't hold your breath, 'cause you'll see one now).
Actually, this was his second suggestion. His first (idiotic) idea was to have a trap door mechanism in the aisle of every plane. If a plane is hijacked, a member of the crew could release a hatch while the hijackers are walking up and down the aisles and drop them out of the bottom of the plane at 32,000 feet.
Hey, turkey!! If I didn't live in an anti-RKBA state, I WOULD BE an 'average permit holder! So might you--so are you going to hijack a plane because your wife kicked you out of bed? Or because your "god" told you to kill Americans to get to heaven? You think you'd get a permit??
Another way to think of it is: how many crimes did permit-holders commit in the last, oh, say, century? Rarely do I call someone ignorant, but you get the first runner-up prize...