. "Astronaut Group 6 (the 'XS-11') was announced by NASA on August 11, 1967, the second group of scientist-astronauts. Only five of the eleven were given formal assignments in the Apollo Program, and these were all non-flying. Assignments for the group were delayed by the requirement to spend a full year at UPT to become qualified as jet pilots (as were the Group 4 scientists before them)."@en . .