In this interview, MAJ Andrew Fisher gives us a great review of pre-hospital whole blood in the military; where we are now and how we got there. He reminds us that, "everything old is new again." The first whole blood transfusion research was done by the military in 1940 and was used extensively in WWII and the Korean War. Supply limitations during MASCAL events in the early 2000's led to authorization to use walking blood banks at fixed facilities, and the results were promising. Further evaluation led to codification of walking blood banks in deployed theatres when demand outstripped supply, driving the creation and implementation of a prehospital blood program that continues to be the gold standard. Visit our Social Media @jsomonline. https://jsom.us/Podcast.