77-year-old finds second life as janitor—students had no idea about his incredible career-teaser

Most people don't think too much about their janitors. It's a good and steady job, but it might seem like one that anyone could do---you never imagine that there's someone extraordinary mopping the floors. But one janitor at a school in Knoxville, Tennessee is proving that assumption wrong. Little do most people know, he's actually had a remarkable, historic career...   Forrester was a major part of the space program that put a man on the moon.   In 2014, he suffered what seemed a stroke.   Forrester now says he'd rather work as a janitor, even if he could go back to his old job.