A U.S. Air Force firefighter participates in nighttime

A U.S. Air Force firefighter participates in nighttime live structural fire training as part of exercise Patriot Warrior at Sparta/Fort McCoy Airport, Fort McCoy, Wis., August 17, 2016. Patriot Warrior is the Air Force Reserve's premier contingency deployment training exercise, designed to demonstrate training ranging from bare base buildup to full operational capabilities. More than 11,000 members from the U.S. service branches and their Reserve components, including Air Force, Army, Navy, and Marines are participating alongside British, Canadian, and Saudi Arabian forces. (U.S. Air Force photo by Staff Sgt. Kyle Brasier)