Petty Officer 2nd Class Barbera Silkwood moves through muddy slurry under barbed wire. Petty Officer 2nd Class Barbera Silkwood moves through muddy slurry under barbed wire as she tackles the endurance course at the Jungle Warfare Training Center at Camp Gonslaves, Okinawa, Japan, on Feb. 25, 2005. The 3.4-mile obstacle course and is part of a weeklong jungle skills training class. Silkwood is a Navy journalist attached to the Seabees of Naval Mobile Construction Battalion 40 deployed from Port Hueneme, Calif. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 416075-X-ZWT37-831.jpg Photo Gallery