090314-N-5253T-010
DOUGLAS, Ariz. (March 14, 2009) Seabees assigned to Naval Mobile Construction Battalions (NMCB) 133 and NMCB-14 construct a 1,500 foot-long concrete-ined drainage ditch and a 10 foot-high wall to increase security along the U.S. and Mexico border in Douglas, Ariz. (U.S. Navy photo by Steelworker 1st Class Matthew Tyson/Released)