British billionaire Hamish Harding, who is said to be among the passengers onboard the submarine that went missing on trip to the Titanic wreckage is seen in this handout picture taken in Kennedy Space Center, Florida, U.S. July 2019. Courtesy of Jannicke Mikkelsen/via REUTERS
Vice-Chairman of Engro Corporation Limited Shahzada Dawood, who is said to be among the passengers onboard the submarine that went missing on trip to the Titanic wreckage is seen with his son Suleman Dawood in this undated handout picture. Courtesy of Engro Corporation Limited/via REUTERS
The Titan submersible, operated by OceanGate Expeditions to explore the wreckage of the sunken SS Titanic off the coast of Newfoundland, dives in an undated photograph. OceanGate Expeditions/Handout via REUTERS