Two U.S. Air Force fighter jets taxi to take off for practice for an inauguration flyover at Joint Base Langley-Eustis, Va., Jan. 19, 2017. Two generations of fighter aircraft are scheduled to fly in a close formation during the inauguration of President-elect Donald J. Trump at the Capitol in Washington, District of Columbia, Jan. 20, 2017. (U.S. Air Force photo by Airman 1st Class Derek Seifert)