Master Sgt. Nathan Bryan, 28th Aircraft Maintenance Squadron NCO in charge of weapons loading, speaks to Airmen prior to munitions loading on the flightline during an operational readiness exercise at Ellsworth Air Force Base, S.D., Sept. 15, 2014. Crews of four Airmen loaded more than 20 bombs into aircraft during the exercise while being evaluated on the safety and effectiveness of the process. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/Released)