U.S. Air Force security forces assigned to the 621st Contingency Response Wing at Joint Base McGuire-Dix-Lakehurst, N.J., stretch defensive concertina wire around their camp perimeter on the first night of Eagle Flag 13-2 at Lakehurst March 18, 2013. The CRW was paired with U.S. Army Soldiers from the 690th Rapid Port Opening Element based at Joint Base Langley-Eustis, Va., and were participating in a U.S. Transportation Command Joint Task Force validation exercise March 18 to 22, 2013. (U.S. Air Force photo/Tech. Sgt. Parker Gyokeres)