Gen. Arnold W. Bunch, Jr., fires the M320A1 grenade launcher with the ballistic sighting module aiming device with guidance from Staff Sgt. Brett Miner, 37th Training Support Squadron combat arms instructor, at Medina range Sept. 4 during his visit to Air Force Materiel Command Units at Joint Base San Antonio, Texas. (U.S. Air Force photo by Sarayuth Pinthong)