This is one of the most brutal and demanding for special operations forces exercises. Expeditionary Unit Marines 24 who is trained to work in all environments, including water subjected to the stress test.

Actually, they are learning how to escape from a submerged in conducting training in the HUET (Helicopter Underwater Egress Trainer) in Camp Lejeune helicopter. The test measures the physical and mental capacity of the Marines that are subjected to high stress situations and difficulty.