JOINT BASE MCGUIRE-DIX-LAKEHURST, N.J. - Port Security Unit (PSU) 307 members are fed by volunteers from the USO of Pennsylvania and Southern New Jersey, July 22, 2011. Shortly after being fed, PSU 307 departed for the Middle East, where the unit will be charged with providing harbor defense and security to ports, seaward approaches, and waterways within U.S. Central Command's area of responsibility and ensuring the free flow of personnel, equipment and commerce in the region. U.S. Coast Guard photo by Petty Officer 2nd Class Michael Anderson.