Part One: Andy Saunders is responsible for the spectacular new book "Apollo Remasterd: The Ultimate Photographic Record." Saunders examined more than 35,000 photographic images in NASA's frozen vaults before selecting 400 - most never seen before by the general public - and remastered them. The book is being released to commemorate the 50th anniversary of Apollo 17 in 1972 - which is the last time that human beings walked on the surface of the moon. Part Two: Apollo 15 astronaut Al Worden.