Clearing snow from flight line with snow plough in Iowa

UNITED STATES - MARCH 9: In this handout footage provided by U.S. Department of Defense, Civil engineers assigned to the 185th Air Refueling Wing cleared another round of snow this week at the Sioux City, Iowa Air National Guard unit. This week's snow was piled on top of a series of snow events this winter in Western Iowa that required snow removal crews to work a lot of additional hours to ensure air operations at the Air Refueling Wing could continue without interruption, the main priority is clearing the flight line that is home to the unit's KC-135 mid-air refueling aircraft. (Footage by U.S. Department of Defense/Milmotion via Getty Images)