As the Tactical Response team mourns the loss of a squad member, Josh finds himself in the middle of a domestic dispute. The dispute turns nasty and the husband flees the house leaving his wife unconscious and bleeding. Tactical Response go after the man who is heavily armed and dangerous, a trained army sniper. Armed with a high-powered hunting rifle, the man is cornered on the roof of a high rise building. Lawson knows it will be almost impossible to talk him down. Searching for answers, Josh confronts the man responsible for the bombing.