Firefighters hone aircraft rescue skills
A U.S. Air Force firefighter from the 355th Civil Engineer Squadron walks away after igniting a controlled fire during a training exercise at Davis-Monthan Air Force Base, Ariz., Jan. 10, 2018. The objective of the exercise was to quickly extinguish the controlled fire, which was lit beneath a mock A-10C Thunderbolt II. (U.S. Air Force photo by Airman 1st Class Michael X. Beyer)