Girder Guard Marines perform preventative maintenance to a girder bridge during a field training exercise at Camp Pendleton, Calif., Feb. 28, 2018. The Marines, assigned to Bridge Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, attached ropes to link reinforcements under the bridge to ensure it was tightly secured. Marine Corps photo by Pfc. Timothy Shoemaker SHARE: Download: Full Size (4.49 MB) Credit: Pfc. Timothy Shoemaker VIRIN: 180228-M-QQ996-014C.JPG Photo Gallery