MUDDY WATERS U.S. Marine Corps Sgt. Christine Rivera leads fellow Marines through one of the Battle Skills Training School Endurance Course's murky swamps on Marine Corps Base Camp LeJune, N.C., Dec. 12, 2008. Rivera, a financial management resource analyst, is assigned to 2nd Marine Logistics Group Comptroller. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 009784-G-LSA42-220.jpg Photo Gallery