Some times you'll see them in regular PKI gear - slacks and a white PKI polo. They always have a radio with an extension.
I saw a couple of them with a lady who had lost her child. Apparently her boyfriend was supposed to be watching the kid, but he thought that the kid was with its mom. She was going psycho - punching him, kicking him, yelling the most profane stuff. The guards had to hold her back. He finally said "I can't take this (expletive)," and walked out of the park. I never heard anything about it on the news, so they must have found the kid.
Thought I'd share that.
Jacob