An American diplomat is killed while being used as a pawn in a dangerous drug ring, and the team must work together to bring them down. Also, Jubal and OA try to help friends from their past fight off their inner demons.

The murder of a TSA agent leads the team to hunt down a killer who is using drug mules to exploit airport security checkpoints. Also, OA struggles to cope with the aftermath of the sarin gas exposure and the 10th anniversary of his army friend's death in Afghanistan.