NASA Administrator Michael Griffin watches the solid rocket booster separation from firing room four during the launch of the Space Shuttle Discovery on Dec. 9, 2006. The shuttle landed at the Kennedy Space Center on Dec. 22, 2006, after completing the third successful shuttle mission of the year.
NASA Administrator Michael Griffin watches the solid rocket booster separation from firing room four during the launch of the Space Shuttle Discovery on Dec. 9, 2006. The shuttle landed at the Kennedy Space Center on Dec. 22, 2006, after completing the third successful shuttle mission of the year.Image credit: NASA/Bill Ingalls