Fire in the sky
A flash of lightning explodes over the flightline at McConnell Air Force Base, Kan., illuminating the night sky during a nighttime air refueling training mission, June 24, 2013. Pilots and refueling boom operators from the Air Force Reserve 931st Air Refueling Group at McConnell routinely conduct training missions at night in order to maintain proficiency in refueling operations under all conditions. The lightning was a product of a line of thunderstorms that blew through the area during the evening. (U.S. Air Force photo by Senior Master Sgt. Ray Lewis)