Out of the Blue Army ROTC Cadet Efrain Colon of the University of Puerto Rico climbs an obstacle as part of a confidence course at Fort Knox, Ky., June 27, 2019. SHARE: Download: Full Size (1.92 MB) Tags: ROTC, army, physical fitness Credit: Kyle Gallagher, Army VIRIN: 190627-A-GI410-237Y.JPG Photo Gallery