English: President Richard Nixon Greets Former Vietnam Prisoner of War John McCain, Jr. at a Pre-POW Dinner Reception, 5/24/1973.
Note that the NARA description is a little unclear. The former POW is John S. McCain III ('Jr.' is his father). The photograph is taken as part of a speech that Nixon gave to former POWs in an auditorium at the State Department during the day of May 24, 1973. In the evening, 600 ex-POWs and their families were honored at a gala dinner on the lawn of The White House. See for example "Nixon Vows To Protect U.S. Secrets", UPI, The Tampa Tribune, May 25, 1973, pp. 1, 20.