Staff Sgt. David Loving, 28th Civil Engineer Squadron structures apprentice, center, prepares to pass an oil drum to Senior Airman Kurt Nelson, 28th CES structures apprentice during a leadership reaction course at the South Dakota National Guard West Camp Rapid training facility, Rapid City, S.D., June 17, 2016. The course included over 10 different obstacles designed to build and strengthen team cohesion and communication skills. (U.S. Air Force photo by Airman 1st Class Denise M. Nevins/Released)