That's the answer I was looking for, Andy.
I flew to America a couple of weeks after 9/11 and couldn't help be amused at the enormous number of police wandering around with automatic weapons.
This was meant to make me feel safer, but:
1. Guns around me do not generally make me feel safe; and
2. How would people with guns have prevented 9/11?
It's very odd the things, often completely illogical, that make people feel safer.