Air Chief Marshal Sohail Aman, Chief of Air Staff of the Pakistan Air Force, and Air Force District of Washington Commander Maj. Gen. Darryl Burke participate in a wreath laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Oct. 6, 2015. Distinguished visitors commonly pay formal respects to the sacrifice of America's veterans in foreign wars by placing a wreath before the Tomb. The Air Force District of Washington brings air, space and cyberspace capabilities to the joint team protecting the nation's capital, and supports local personnel and those serving worldwide. (Photo/ Andy Morataya)