[lcms rev]

They know that her car does have a gun in the glove box; they have to be thinking about the fact that now every car on campus may have a gun in it somewhere. Ultimately, that may be the deterrent needed against many criminals, just as a "gun friendly zone" sign would be on a store's front door.

[MeshugeMikey]

the perceived deterrent is likely going to work rather well.

perps may be vile punks but they will pay attention to the “threat” to their willy nilly naughtiness

[Izzy Dunne]

they have to be thinking about the fact that now every car on campus may have a gun in it somewhere.

So... they have a place to go to get one. Unless they require locked cars. And in that case, the guns are not as useful as they could be.