Zach Danielson, Complete Contracting Solutions employee, uses a saw to cut through concrete during deconstruction of row 70 on the flightline at Ellsworth Air Force Base, S.D., Aug. 5, 2013. The combination of extreme weather and total weight of the aircraft, starts to deteriorate the integrity of the concrete over time. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)