HomeU.S. Military–Other/Embassy Security Operations ...William Michael Sebast hide William Michael Sebast DS Memorial January 31, 1968 Diplomatic Security Memorial U.S. Military—Other/Embassy Security Operations Year of Death: 1968 Cpl. William Michael Sebast, U.S. Army, died on January 31, 1968, defending U.S. Embassy Saigon during a Viet Cong attack. His hometown is Albany, New York. Please contact DS Public Affairs (dspublicaffairs@state.gov) if you have an image of this individual. Tags DS Embassy Security Operations Vietnam