On the other hand if you jumped a fence or tried to enter a Priority A resource (a nuke-loaded flight line anywhere--or attempted to enter Cheyenne Mountain) you might get shot.  Outside the mountain we had numerous attempts to jump fences and enter, and it always ended badly for the intruders, though we always captured them and never shot anyone during my time. 

Inside the mountain we sometimes saw Air Force members leaving their Restricted Area Badge on their jackets in their office then going to the chow hall without their badge.  We would prone them out on the floor at the point of an M16 and verify their identity, usually by having a co-worker retrieve their badge, but we tended not to shoot them.  Odds were they were Master Sgts, Senior Master Sgts, even officers (that usually went very badly) etc., and would pitch a royal bitch after being proned out by an Airman First with a rifle.  Nevertheless, they would be told, or their supervisor, or his supervisor, no matter how high on the chain it went, would be told that if you were stupid enough to walk around in a Priority A resource without your badge--which was the same as walking around a nuke-loaded flightline without your badge--you should consider yourself lucky the cops did NOT shoot you. 

And we had a fellow with four stars--NORAD CINC--who was the final word on that on our side.  We didn't screw around with security at NORAD.  A Priorty A resource was just that.  We were the people who identified threats and who told SAC and TAC when to go. No one launched without NORAD identifying threats anywhere in the world. Any risk to our people and equipment was taken very seriously. 

I once found an unmarked bag right outside the entrance to one of our buildings inside the complex.  I grabbed it and took it out though the blast doors and called an outside patrol to come and retrieve it and remove it to the outside.  Possible bomb.  It turned out to be a bird colonel's gym clothes--he'd stupidly left the bag there for a moment and gone back inside to get something, and he was pissed off!  Nevertheless, I did the right thing, and he knew it, so he simply dealt with being pissed off and inconvenienced.  And I was in the clear because I did the right thing.  Not many things an airman or young NCO can do to piss off an 0-6 and get away with it.  Except doing the right thing.