Standoff - Season 1 - Eps 9: Peer Group
A father turns to CNU to prevent a hostage situation after finding his teenage son's notebook full of violent images, but Matt and Emily arrive at the school after the hostage situation begins. The situation turns when one of the four gunmen shoots a hostage and takes his three comrades hostage as well.
About Standoff

Title: Standoff
First Air Date: 2006-09-05
Last Air Date: 2007-07-20
Status: Ended
Rating: 6/10 (from 14 votes)
Language: EN
Seasons: 1
Total Episodes: 18
Network: FOX
Genres: Drama, Crime
Production Companies: Sesfonstein Productions
Synopsis
The series focused on an FBI Crisis Negotiation Unit whose members negotiated hostage situations and shared relationships.
Cast

Michael Cudlitz
Frank Rogers

Ron Livingston
Matt Flannery

Raquel Alessi
Lia Mathers

Jose Pablo Cantillo
Duff Gonzalez

Rosemarie DeWitt
Emily Lehman

Gina Torres
Cheryl Carrera