Members of the U.S. Air Force Honor Guard advance the colors during the U.S. Air Force Tattoo at Joint Base Anacostia-Bolling, Washington, D.C., Sept. 13, 2017. More than 100 Service members from across the National Capital Region attended the tattoo in commemoration of the Air Force’s 70th anniversary. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)