WATCH: Get a rare, behind the scenes look at the intense world of the NYPD Hostage Negotiation Team. From the CNN segment by Brynn Gingras. "We're getting called when people are at their worst moments," Lieutenant Zimmerman said. "We're there until the job ends -- whether it be 20 minutes or 20 hours. At the end of the day, it all comes down to human life. It's all about helping somebody who is in crisis." http://www.cnn.com/2017/11/10/us/new-york-police-hostage-negotiation-team-beyond-the-call-