Dawn Blitz Prep Marines prepare an MK970 semitrailer refueler for operations during Exercise Dawn Blitz 17 on San Clemente Island, Calif., Oct. 24, 2017. Dawn Blitz is a scenario-driven amphibious exercise conducted by sailors and Marines assigned to Expeditionary Strike Group 3 and the 1st Marine Expeditionary Brigade. Marine Corps photo by Cpl. Austin Mealy SHARE: Download: Full Size (0.83 MB) Credit: Cpl. Austin Mealy VIRIN: 171024-M-YR007-408C.JPG Photo Gallery