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Alkonis is a specialist in underseas warfare and acoustic engineering who at the time of the crash had spent nearly seven years in Japan as a civilian volunteer and naval officer.

Suleman Dawood, the 19-year-old who authorities said was one of five passengers aboard the submersible that imploded near the Titanic’s wreckage last week, was fearful of making the underseas voyage, according to his aunt.

The excursion company that operated Titan, the submersible that went missing Sunday, said Thursday that all five of the vessel’s crew members have died underseas.

Resources that can scour the area underseas have been focused on that location since then in hopes of finding the Titan, the missing 21-foot tourism and research submersible.

A collection of wildlife, ocean, and bird advocacy groups submitted public comments last year about New Jersey’s offshore ventures, stressing the importance both of offshore wind and the need to make it safe, including by: deploying available collision-detection tech, carefully tracing cable routes so as not to disturb underseas vegetation, utilizing turbine parts like “quiet foundations” that depend on gravity and suction as opposed to pile-driving—and, if pile-driving is still required, not doing it on a 24/7 basis during construction, in order to reduce noise.