Presentation of the NASA (National Aeronautics and Space Administration) Distinguished Service Medal (DSM) to astronaut Cmdr. Alan B. Shepard, Jr., 10:00AM. Astronaut Commander Alan B. Shepard, Jr., and his wife, Louise Brewer Shepard, arrive at the White House for the presentation ceremony of the National Aeronautics and Space Administration (NASA) Distinguished Service Medal to Commander Shepard. Walking away from United States Marines helicopter, L-R: Public Affairs Officer for NASA, Lieutenant Colonel John A.Powers; Mrs. Shepard; Commander Shepard; unidentified man stands in front of helicopter. South Lawn, White House, Washington, D.C.