Deep End Diver A Marine participates in the U.S. Marine Corps Combatant Diver Course at Camp Schwab in Okinawa, Japan, May 11, 2017. The eight-week course combines lectures, demonstrations and practical application of circuit diving, diving physics and medical aid. The Marine is assigned to the 3rd Reconnaissance Battalion. Marine Corps photo by Sgt. Isaac Ibarra SHARE: Download: Full Size (1.5 MB) Credit: Sgt. Isaac Ibarra VIRIN: 170512-M-HH765-001C.JPG Photo Gallery