200605-M-UY835-1012 CAMP PENDLETON, Calif. (June 5, 2020) A corpsman with the 15th Marine Expeditionary Unit organizes blood vials collected from a blood drive during Realistic Urban Training at Marine Corps Base Camp Pendleton, California, June 11, 2020. The blood drive allowed 15th MEU’s Shock Trauma Platoon to exercise procedures for a walking blood bank; allowing whole blood transfusions from healthy individuals and identifying individuals with critical blood types. (U.S. Marine Corps photo by Cpl. Patrick Crosley)