ELLSWORTH AIR FORCE BASE, S.D. -- (Front to back) Airman Kaitlin Walker, 28th Bomb Wing radio and television broadcaster, endures as many sit-ups as she can in two minutes while Airman 1st Class Elimae Gilchrist, 28th Force Support Squadron fitness specialist, keeps track of her time and number of sit-ups during a fitness assessment, March 9. The fitness assessment both tests the individual’s fitness level and provides a benchmark for developing a personalized fitness program. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)