Video by Sgt. Mary Torres Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/973788'></iframe> Download Embed Share Combat Logistics Battalion 15 Marines conduct National Defense Area signage emplacement mission DoD Southern Border 2025 Aug. 11, 2025 | 1:47 U.S. Marines with Combat Logistics Battalion 15 (CLB-15), Combat Logistics Regiment 17, 1st Marine Logistics Group, assigned to Joint Task Force-Southern Border (JTF-SB), conduct movement and emplace National Defense Area signs during a signage emplacement mission in Yuma, Ariz., Aug. 11, 2025. JTF-SB executes full-scale, agile, and all-domain operations in support of U.S. Customs and Border Protection to protect the territorial integrity of the United States and achieve 100% operational control of the southern border. (U.S. Marine Corps video by Sgt. Mary Torres)