28 June 2019 - https://www.president.gov.ua/ru/news/volodimir-zelenskij-pri... Official document by Ukrainian president granting the divers the title of Heroes of Ukraine. Only one is mentioned posthumously - Boris Baranov.

Boris Baranov - died in 2005 of heart attack. https://24smi.org/celebrity/98385-boris-baranov.html

Ananenko Alexey - https://ru.wikipedia.org/wiki/%D0%90%D0%BD%D0%B0%D0%BD%D0%B5...

Bespalov Valeriy - https://ru.wikipedia.org/wiki/%D0%91%D0%B5%D1%81%D0%BF%D0%B0...