Yes, they have ammo in their pockets, but so what? We don't need armed guards at the security checkpoints. That's not where the problems lie. When's the last time -- or the FIRST time -- someone forced their way through a security checkpoint? What would be the point? That's not how to get on a plane, is it?
Terrorists go through security just like everyone else. It's after they are in the air that the problems start. Maybe we can use some of those soldiers on the airplanes themselves, but they are wasting their time standing around watching the Argen-not-so-brights misbehave.
Bruce