The first responders suspect a serial bomber is on the loose after two mail bombs go off; Buck faces a life or death situation.
Did You Know?
Guest stars Paula Marshall and Danny Nucci are married in real life. See more
Firefighter Diaz' Guy Perpetually In Need of a Shave facial hair would not be tolerated. In addition to appearing that way at a formal ceremony, it would interfere with his air mask sealing against his face. See more
Once In My Life
Performed by The Decemberists See more