The U.S. and Canadian Coast Guards are scanning the ocean in search of the missing Titanic tourist submarine. The five men on board were identified as British billionaire Hamish Harding, Shahzada Dawood, his teen son Sulaiman Dawood, Titanic expert Paul-Henri Nargeolet and founder of OceanGate Stockton Rush. They are sealed in the 21-foot metal tube with no food and nothing to drink. Inside Edition's Ann Mercogliano has more.