News that a tugboat's cook had survived being trapped underwater for nearly three days came out six months ago. But it wasn't until this week that video emerged showing the dramatic moment when Harrison Okene's outstretched hands reached toward his rescue divers, and they realized to their astonishment that he was still alive. It was all thanks to a 4-foot pocket of air in the boat, which sank off the coast of Nigeria. (More Harrison Okene stories.)