During 20 years as a Naval Aviator, including 13 years with the National Aeronautics and Space Administration (NASA), Captain Eugene A. Cernan left his mark on history with three historic missions in space as the Pilot of Gemini IX, the Lunar Module Pilot of Apollo X, and the Commander of Apollo XVII.  After flying to the moon not once, but twice, he also holds the distinction of being the second American to walk in space and the last man to have left his footprints on the lunar surface.