The SWAT team faces difficult reminders of a past school shooting when they receive a warning that a copycat plans to re-enact the crime. As the team races to stop the new threat, they flash back to the day of the tense first mission.

Alexandra Lemosle, Alexia Pearl, Amanda Lowe-Oadell, Andrea Savo, Carie Kawa, Cassandra Bernard, Cathy Cahlin Ryan, Chi-Lan Lieu, Daniel Robbins, Elise Robertson, Geoffrey Kennedy, Horace Dodd, James McAndrew, Jesse Bernstein, Joseph Aceves, Juan Martinez, Karen Strassman, Katherine Landry, Kyle Butenhoff, Loretta Fox, Louis Ferreira, Mark Atteberry, Megan Lee, Meredith Monroe, Michael Chandler, Mike Kersey, Momo Lightner, Trae Ireland, Vika Stubblebine, Xavi Israel