Night Watch An airman conducts close air support at Hill Air Force Base, Utah, Jan. 27, 2020, during Emerald Warrior, an annual exercise that provides realistic pre-deployment training. SHARE: Download: Full Size (0.82 MB) Tags: Emerald Warrior, Air Force Credit: Air Force Tech. Sgt. Sandra Welch VIRIN: 200127-F-HF922-0051C.JPG Photo Gallery