Betsy Blaney

Two devastating and embarrassing moments at past Olympics really don't mean that much to U.S. shooter Matt Emmons, even if he did lose gold medals by shooting at the wrong target and having his gun fire accidentally. He just beat cancer, which puts everything else in perspective, even the Olympics.

South Korean archer Im Dong-hyun sees only blurred colors and lines when he peers toward the target about 76 yards away, arrow at the ready. It doesn't stop the legally blind Olympian from hitting the grapefruit-sized yellow center -- again and again and again. Im set the first world record of the London Olympics on Friday.