Border Wall The U.S. Army Corps of Engineers and contractors work on sections of the newer bollard wall near Lukeville, Ariz., which separates the U.S. southern border from Mexico, in response to the Department of Homeland Security’s Customs and Border Patrol request for assistance, Aug. 21, 2019. SHARE IMAGE: Download Image: Full Size (1.16 MB) Tags: DOD Photo By: Marine Corps Sgt. Dylan C. Overbay, DOD VIRIN: 190826-D-JH334-0083C.JPG Photo Gallery