Green Beret soldiers come ashore via a combat rubber raiding craft, or 'Zodiac'.
The soldiers are undergoing training as part of the Special Forces Combat Diver Qualification Course (SFCDQC).
The SFCDQC is a 7-week course run by the U.S. Army John F. Kennedy Special Warfare Center and School (USAJFKSWCS) Special Forces Underwater Operations School at Key West, Florida.
The course focuses on SCUBA diving but also includes several days of instruction in the use of CRRCs.
Students learn how to perform various surface infiltration operations including a so-called 'double-duck', in which troops deploy into the water via parachute, along with 2 zodiacs bundled together.
Once in the water, the troops recover, seperate and board the boats, ready their outboard motors then go on to perform a beach insertion.