A TeamGrit CrossFit competition judge goes over rules for the first heat of competition with U.S. Air Force Staff Sgt. Paris Roberts, right, and her teammate, Kerri Krasnow Jan. 17, 2015. Roberts is a knowledge operations manager with Air Combat Command Public Affairs at Langley Air Force Base, Va. Roberts trained five days each week to prepare for the competition, and has practiced CrossFit for two years. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)