GRENADE GRIP U.S. Air Force Staff Sgt. John Plemons, left, and Capt. Ryan Natalini demonstrate to students attending the Basic Officers Course how to receive a hand grenade on Camp Bullis, Texas, June 18, 2009. Plemons and Natalini are assigned to the 343rd Training Squadron. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 855288-P-NAX28-983.jpg Photo Gallery