Personnel from the 28th Civil Engineer Squadron remove snow from the flight line at Ellsworth Air Force Base, S.D., on Jan. 25, 2017. With more than three million square yards of flight line, the civil engineers, also known as “Dirt Boyz”, have cleared over 20 inches of snow this season alone. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)