Mark Boser, 28th Civil Engineer Squadron pavements and heavy equipment welder, cuts a railroad tie on Highway 14/16 in Box Elder, S.D., Oct. 14, 2014. Civil engineer personnel partnered with Box Elder to remove the unused damaged tracks, which had become a traffic safety concern – working with local construction teams Oct 15-17. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)