While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives.

Ciarán McCarthy, Derek Graf, Ella Scott Lynch, Geoff Brown, Gordon Vasquez, Jordan Belfi, Liz Jenkins, Mia Serafino, Patrick Gallagher, Zachary Garred