Support WBURA year after the Titan submersible implosion, investigators still don't have answersPlay03:29Download AudioRachel TreismanUpdated June 18, 2024 ShareU.S. Coast Guard Rear Adm. John Mauger, commander of the First Coast Guard District talks to the media on June 22, 2023, at Coast Guard Station Boston. (AP)This article was originally published on June 18, 2024.