Staff Sgt. Yamil Roman-Rivera, a 43rd Security Forces Squadron Airman, gives a sniper rifle presentation March 31 to Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, during his visit to Pope Air Force Base, N.C. and nearby Fort Bragg. Airmen from the 43rd SFS also had a military working dog presentation at the expo. (U.S. Air Force photo/Airman 1st Class Mindy Bloem)