The museum was open from May through October, and featured displays of working military and civilian airplanes.

None of these objections, of course, mean that deploying antimissile technology on civilian airplanes can't be done, at least in part.

Certainly, shooting down all wayward civilian airplanes is not the answer.

"This type of missile, seen from the side, would easily remind one of a small civilian airplane," he said.

The shuttle does not carry a crash-hardened data recorder, as civilian airplanes do.

Parliament passed a law authorizing the military to shoot down civilian airplanes if it believes they are being used in a 9/11-style terrorist attack.

If the President uses a civilian airplane it is designated Executive One.

The civilian airplane was filled with people who did not consider themselves to be at risk at all.

When the world economy is up, people buy civilian airplanes.

The United States is signatory to a treaty that appears to bar using force against civilian airplanes.