PBR stands for Patrol Boat Rescue, the small fiberglass Navy vessels that cruised into the dark shallow rivers of Vietnam. In the summer of 1969, Army Intelligence reported an influx of Viet Cong near the North Saigon River. this area was known as a crossing point into Cambodia where the Viet Cong and North Vietnamese Army would stock up on ammo and supplies. On the night of August 2, the Navy PBRs and an Army Recon Team were ordered to stop them. This programme details how 30 courageous men on 6 boats put themselves in harm's way. Sailor David Larsen almost single-handedly battles 50 Viet Cong, saving many American lives, while taking out the enemy. 45 minutes of war result in a hard-fought victory for the US. This is an incredible story of strategy, planning and stealth. These were the integral attributes to this previously untold story about sacrifice, courage and duty in Vietnam as 30 men on 6 boats did all they could to battle the Viet Cong.