US Marines installed concertina wire along the US-Mexico border in San Ysidro, California, on February 3.This footage filmed by Lance Cpl Diego Berumen of the US Marine Corps and released by the DVIDS shows US Marines putting up barbed wire along the southern border wall using basket lifts.The Marines said they were working together with the Department of Homeland Security on putting up physical barriers to add more security that will decrease illegal border crossings. Credit: US Marine Corps/DVIDS via Storyful