KGMIU.S. Coast Guard Rear Adm. John Mauger, commander of the First Coast Guard District, talks to the media, Monday, June 19, 2023, in Boston. A search is underway for a missing submersible that carries people to view the wreckage of the Titanic. Canadian officials say the five-person submersible was reported overdue Sunday night about 435 miles (700 kilometers) south of St. John's, Newfoundland and that the search is being led by the U.S. Coast Guard. (AP Photo/Steven Senne)