U.S. Navy Hospital Corpsman Alfredo Zuniga, 23D Marine Regiment, 4th Marine Division, Marine Forces Reserve, begins taking vital signs as Petty Officer 2nd Class Anthony Banas finishes his initial trauma assessment on Cpl. Eric Carranza Flores for the Valkyrie whole blood transfusion program in San Bruno, CA on Jan. 10, 2024. The Valkyrie Program is a course designed to teach attendees how and when to apply a whole blood transfusion to casualties in a combat environment. (Courtesy Photo)