Tech. Sgt. Darlene Santana waits for a high-five as Senior Master Sgt Robert Elkins looks down at the scale during the 51st Medical Group "Biggest Loser" competition at Osan Air Base, Republic of Korea. This is the third week and third weigh-in of the 10-week competition, designed to bolster physical fitness and nutrition within the unit. Sergeant Santana is the flight chief at the health and wellness center and Sergeant Elkins is the laboratory flight chief. (U.S. Air Force photo/Staff Sgt. Brian Ferguson)