During World War II, the U.S. Army tasked Mayo Clinic with finding a solution for pilots who were dying after suffering blackouts. Mayo Clinic hired a team of doctors to research and define the specific physiologic effects causing blackout and unconsciousness during high G forces. Physiologists Drs. Earl H. Wood, Edward Baldes, Charles Code, and Edward Lambert developed the G-suit with air bladders that prevented blood from pooling in pilots' legs. The suit was worn by U.S. pilots toward the end of World War II.