A lifevest protects you from drowning and a bulletproof vest protects you from getting shot, and a sweater vest protects you from pretty girls.
When I first started the show, I was known as the 'cop nerd.' I was in the 9th Precinct in the East Village every day. I'd be at work wearing a fake bulletproof vest with foam in it, then I'd leave and put on a real one to ride around with these guys.