U.S. Army Staff Sgt. Matthew Cassidy of the 2-310th, 86th Training Division prepares to rapel down a rock face on February 7th, 2017 on Ft. Hunter Liggett, Calif. Cassidy participated in the 91st Training Division's Best Warrior Competition that assessed his proficiency in warrior tasks and battle drills. (U.S. Army photo by Spc. Derek Cummings/Released)