Overview
During the Vietnam war, the American army forms a special unit called "tunnel rats" to go down into the elaborate system of underground tunnels constructed by the Vietcong, kill anyone they find in it and destroy the system.
During the Vietnam war, the American army forms a special unit called "tunnel rats" to go down into the elaborate system of underground tunnels constructed by the Vietcong, kill anyone they find in it and destroy the system.