After searching over 5,000 square nautical miles, the United States Coast Guard has called off the search operation for a crew member who went missing from the cruise ship MS Liberty of the Seas. 39-year-old Norman DeCastro went missing on April 24 and was last seen at 1:30 a.m. Involved in the search efforts were the HC-144 airplane and the coast guard cutters Manowar and Pompano.