(10/08/1968) -- Apollo 7 astronauts, left to right, Walter Schirra, Walter Cunningham and Donn Eisele pause during a practice mission yesterday within Kennedy Space Center's Flight Crew Training Building. The trio spent several hours in the Apollo mission simulator, rear, in preparation for their upcoming mission. The National Aeronautics and Space Administration's first manned Apollo flight is scheduled to begin no earlier than Oct. 11, 1968.