Most people go around in condition "white" all of the time.. But I think there is nothing wrong with heightening your situational awareness, especially in a location that an attacker would have a built in advantage. Those of you that don't think that bad things happen to good people, are not keeping up with current events. And historic events for that matter. I am sure some of you here think I am either paranoid, or cowardly/fearful. I prefer to think of myself as being prepared. My few short years as a LEO was enough for me to see the "seamy side of life".
Your mileage may vary, and in this great country of ours, you are free to think as you choose.