U.S. Navy Constructionman Joseph K. Otumfuor is covered with silt from a muddy trench. U.S. Navy Constructionman Joseph K. Otumfuor is covered with silt from a muddy trench as he runs a 3.8 mile obstacle course at the Jungle Warfare Training Center in Okinawa, Japan, on Aug. 17, 2005. Otumfuor is assigned to Naval Mobile Construction Unit 74. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 848531-J-YSH11-496.jpg Photo Gallery