SAN DIEGO - U.S. Coast Guard search and rescue crews continue their search for the missing crewmember of the sailboat Aegean, west of the Coronado Islands, Mexico, April 29, 2012.The Coast Guard, along with the Mexican navy and civilian volunteers searched more than 500-square miles since the search began Saturday morning following reports of boat debris near the Coronado Islands. Three of the four crewmembers from the Aegean were found dead during Saturday's search. The sailboat had been participating a Newport, Calif., to Ensenada, Mexico regatta. U.S. Coast Guard video.