Flightline Frost A snow plow clears the snow from the flightline after a winter storm on McConnell Air Force Base, Kan., Dec. 30, 2015. 22nd Civil Engineer Squadron personnel work to keep KC-135 Stratotankers flying to perform aerial refueling. U.S. Air Force photo by Airman Jenna K. Caldwell SHARE: Download: Full Size (0.25 MB) Credit: Airman Jenna Caldwell VIRIN: 151230-D-TE668-001.JPG Photo Gallery