[blam]

"The national guardsmen standing around looking scary in the terminals doing nothing but providing pseudo-security PR, should instead be patrolling the airport runway approaches with their M-16A2s, looking for my hypothetical but entirely possible (even likely) snipers."

The only way to defend against this action is to get these people out of this country and keep them out. Even NG patrols can not prevent this action.

[Travis McGee]

I agree, but we need to do both since there are millions of them who have by hook or crook become naturalized citizens, and dealing with them will be a tough nut to crack.