Inside the Intense World of a New York Police Hostage Negotiator

New York (CNN) “It’s time.”

When a friend called New York Police Lt. Chris Zimmerman and said those two words, it immediately set off a red flag.

“I’m thinking he knows what I do for a living,” Zimmerman remembered. “It’s his way of reaching out to someone who is going to recognize it.”

Zimmerman is commander of the New York Police Department’s Hostage Negotiation Team.

He is the only full-time member dedicated to this elite group of about 125 officers, spread out across New York City.

Watch the entire interview from CNN [HERE].