U.S. Army Sergeant 1st Class Christopher Hill, 34th Combat Training Squadron ground liaison officer, instructs Airmen on proper loading procedures of the M119 Howitzer Dec. 11, 2020 at Little Rock Air Force Base, Ark. The howitzers will be used as training aides for loadmasters in Green Flag Little Rock exercises. (U.S. Air Force photo by Staff Sgt. Jeremy McGuffin)