The U.S. Coast Guard has launched an investigation into the implosion of the Titan submersible, which tragically killed all five men on board, including 19-year-old Suleman Dawood and his father Shahzada Dawood. In a recent interview, Suleman's mother Christine Dawood revealed that her son had brought a Rubik's Cube on board the submersible in hopes of breaking a world record. The investigation into the cause of the implosion is ongoing, leaving the family with many unanswered questions.