U.S. Air Force Airman Calum Green, 633rd Comptroller Squadron travel pay technician, poses for a photo after a resiliency color run at Joint Base Langley-Eustis, Va., Oct. 20, 2017. “I’m thankful for joining the Air Force and having a positive outlook on everything I’ve gone through so far. I’m also thankful for me being so young and joining the Air Force because it just means a lot to me.” (U.S. Air Force photo by Airman 1st Class Tristan Biese)