181130-M-JX780-0054 CALIFORNIA (Nov. 30, 2018) Lance Cpl. Victor Vargas, a combat engineer with 7th Engineer Support Battalion, Special Purpose Marine Air-Ground Task Force 7, emplaces concertina wire at the California-Mexico Border, Nov. 30, 2018. U.S. Northern Command is providing military support to the Department of Homeland Security and U.S. Customs and Border Protection to secure the Southern border of the United States. (U.S. Marine Corps photo by Lance Cpl. Brendan Mullin/Released)