Lightning illuminates the sky behind a military C-32A (Boeing 757) parked on Joint Base Andrews, Md., May 18, 2015. The C-32A belongs to the United States Air Force's 89th Airlift Wing, which provides global Special Air Mission (SAM) airlift, logistics, aerial port and communications for the president, vice president, combat commanders, senior leaders and the global mobility system as tasked by the White House, chief of staff of the Air Force and Air Mobility Command. (DOD photo by Army Staff Sgt. Sean K. Harp/Released)