Recovery Shackle Marine Corps Cpl. Alex Niedecken attaches a shackle to a vehicle during vehicle recovery training at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., July 23, 2019. Marines train in a challenging, realistic environment for combat readiness. SHARE: Download: Full Size (1.34 MB) Tags: Marine Corps Credit: Marine Corps Lance Cpl. Scott Jenkins VIRIN: 190723-M-QP496-1015Y.JPG Photo Gallery