A U.S. Border Patrol agent stands watch as U.S. Army

A U.S. Border Patrol agent stands watch as U.S. Army Corps of Engineers South Pacific Border District contractor crews continue border barrier installation near Lukeville, Arizona, April 3. These projects are being executed by USACE, as directed through the U.S. Army by the Secretary of Defense, in response to Department of Homeland Security's request for assistance to help secure the United States southern border by blocking drug-smuggling corridors through the construction of roads and fences, and the installation of lighting under Section 284 of Title 10, U.S. Code. DoD and USACE are executing these projects in support of U.S. Customs and Border Protection. (Some personnel and corporate identifiable markings have been masked for privacy reasons. No one in this image crossed the international border.)