Titanic submersible CEO had spoken about worry of vessel not surfacing
Washington Post
Months before Stockton Rush became one of the five people in a missing submersible, he acknowledged fears but said he didn’t think such expeditions were “very dangerous” at all.
https://www.washingtonpost.com/world/2023/06/21/titantic-submersible-ceo-oceangate-stockton-rush/