Rear Adm. John Mauger, the First Coast Guard District commander, delivers a press briefing in Boston, Massachusetts, about the discovery of debris from the 21-foot submarine Titan, June 22, 2023. The Coast Guard was initially searching for five people after the Canadian research vessel Polar Prince lost contact with their submersible during a dive, approximately 900 miles east of Cape Cod, June 18, 2023. (U.S. Coast Guard video by Petty Officer 2nd class Ronald Hodges)