English: President John F. Kennedy tours the power plant of the Oahe Dam and Reservoir during the dam's dedication ceremony, on the banks of the Missouri River, near Pierre, South Dakota. President Kennedy (back to camera) speaks with U.S. Senatorial candidate from South Dakota, George McGovern, from the back seat of the presidential limousine; Governor of South Dakota, Archie M. Gubbrud, sits right of President Kennedy. Also pictured: Representative Byron G. Rogers (Colorado); White House Secret Service agents, John Campion and Walt Coughlin.