Concertina Connections Marine Corps Cpl. Jacob Shonk, assigned to Joint Task Force Southern Border, ties concertina wire together before placing it on the border barrier in Yuma, Ariz., July 29, 2025. SHARE: Download: Full Size (9.16 MB) Tags: Marine Corps, Border Support Credit: Marine Corps Sgt. Mary Torres VIRIN: 250729-M-HP122-1418.JPG Photo Gallery