U.S. Air Force Capt. Ryan Forystek, a 14th Fighter Squadron F-16 Fighting Falcon pilot, attaches his oxygen breathing mask before flight during exercise Iron Spear at Misawa Air Base, Japan, Oct. 12, 2017. Iron Spear is an annual exercise testing the reliability and viability of the 35th Fighter Wing F-16s and pilots’ tactics against surface-to-air missile threats. (U.S. Air Force photo by Airman 1st Class Sadie Colbert)