A U.S. Navy Seabee negotiates a mud-filled trench. A U.S. Navy Seabee with Naval Mobile Construction Battalion 7 negotiates a mud-filled trench during a jungle warfare training exercise in Okinawa, Japan, hosted by U.S. Marines assigned to Jungle Warfare Training Command on Sept. 27, 2007. SHARE IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 290640-W-MWK50-832.jpg Photo Gallery