Uniformed men

I needed to deposit some checks yesterday and parked in the library parking lot which is next to the bank. I looked up at the meter and of course it was empty. I debated about putting a quarter in. What's the chance that I'll get a ticket in the 4 minutes it will take me to deposit 3 checks? I decided to feed the meter. When I walked back from the bank this is what I saw...








I made the right choice.