SECURITY EXERCISE U.S. Air Force Airman 1st Class Travis Fillman watches over an entry control point with an M-60 machine gun during a training exercise on Naval Air Engineering Station Lakehurst, N.J., Oct. 13, 2006. Fillman is a security forces journeyman from the 817th Contingency Response Group, McGuire Air Force Base, N.J. SHARE: Download: Full Size (0.1 MB) Credit: VIRIN: 166817-A-WRN06-719.jpg Photo Gallery