Failure Drill (S03E09)

John’s escalating back pain leads him deeper into his struggle with drugs, prompting serious worries from Ben, who is nearing the end of his training. At the same time, chaos erupts when a gunman opens fire in a factory, leaving Josie injured and forcing Lydia to confront the shooter on her own. In a different development, Sammy resolves to be more involved as he prepares for the arrival of his baby.