Master Sgt. Kellie Boisse, the first sergeant assigned to the 28th Logistics Readiness Squadron, rolls a barrel across a makeshift bridge during a Leadership Reaction Course at the South Dakota National Guard West Camp Rapid training facility, Rapid City, S.D., Sept. 15, 2016. Some challenges required the participants to not only get themselves across, but also retrieve the gear they utilized. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)