U.S. Air Force Airmen prepare to march in the Yorktown Day parade in Yorktown, Va., Oct. 19, 2015. U.S. Service members from Joint Base Langley-Eustis, Va., marched in the parade and participated in a patriotic exercise to commemorate the 234th anniversary of America’s Revolutionary War victory at Yorktown. (U.S. Air Force photo by 2nd Lt. Mahalia R. Frost /Released)