Blast from the past. via Marine Corps Aviation Association.

1970s -- A U.S. Marine and a U.S. Air Force pararescueman from the 40th Aerospace Rescue and Recovery Squadron (in wet suit) run for a U.S. Air Force helicopter during an assault on Koh Tang Island to rescue the U.S. Merchant ship Mayaguez and its crew May 15, 1975. (U.S. Air Force archive photo)