JUNGLE COURSE A U.S. Marine crawls through a watery ditch and under concertina wire during a jungle endurance course on Camp Gonsalves, Okinawa, April 20, 2012. After completing a two-week training evolution at the Jungle Warfare Training Center, the Marines took the four-mile-long course through the Okinawan jungle, using rappelling, rope-crossing and other skills they learned. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 529488-D-AXL47-868.jpg Photo Gallery