i don't look up at the moon and say, what a great guy you are, the last one to the moon. i do it when you ask me. >> we leave as we came and god willing as we shall return. with faith and hope for all manki mankind. neil: december 1972, the last time man walked on the moon, gene cernan was the last man to walk on this farout satellite of earth for what we're capable after. our next guest, based on a mission of a lifetime, where he recounts that time and the lessons from there about you it more comes from the heart, his