Senior Airman Benjamin Rongey, 28th Civil Engineer Squadron electrical systems technician, performs a burpee exercise during the 2012 Mud Run at Ellsworth Air Force Base, S.D., Oct. 23, 2012. Several obstacles on the course tested the ability to memorize information and then answer questions correctly at a later time. If participants answered incorrectly, they were required to complete 30 burpees. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)