U.S. Air Force Airman 1st Class Christopher Walker, a 509th Civil Engineer Squadron firefighter, helps Nakai, the son of Tech. Sgt. David Brandon, the 509th Medical Operations Squadron mental health flight chief, try on protective gear during Operation Spirit at Whiteman Air Force Base, Mo., Nov. 21, 2015. Walker and other firefighters showed children how they help keep Airmen safe during deployments. (U.S. Air Force photo by Senior Airman Sandra Marrero)