AFGSC Airmen train for 2018 Air Force Defender Challenge
Airman 1st Class Christopher Jackson, center, 790th Missile Security Forces Squadron response force leader, and Senior Airman Tyler Arevalo, 341st Security Support Squadron tactical response force member, scale an obstacle Aug. 28, 2018, at Fort Harrison, Mont. Airmen are highly trained to adhere to the highest standards of personal reliability, dedication and performance. (U.S. Air Force photo by Airman 1st Class Tristan Truesdell)