Under clear skies, calm winds and pleasant temperatures, two Airmen from the 185th Air Refueling Wing in Sioux City, Iowa work on the wing of a U.S. Air Force KC-135 on December 12, 2017. The Air Guard members are aided by the absence of winter weather at the close of the day while working at the Sioux City, Iowa based Air National Guard unit. U.S. Air National Guard photo by Master Sgt. Vincent De Groot 185th ARW PA/released