2ND IT. GARY DETTMAN, son of Mr. and Mrs Clayton Dettman, Pierre, has graduated from U.S. Air Force pilot training at Vance AFB, Okla., and has been awarded silver wings. Lt. Dettman now goes to Lakenheath RAF station, England, for flying duty on the F-Ul aircraft and will serve with a unit of the U.S. Air Forces in Europe. The lieutenant is a 1973 graduate of Riggs Senior High School.