The scientific director of OceanGate testified Thursday that the private company's sub Titan malfunctioned days before the failed mission in 2023 that ended in an implosion, claiming the lives of five crew and passengers on a trip to the sunken Titanic.

Rush “crashed into the rear bulkhead, the rest of the passengers tumbled about, I ended up standing on the rear bulkhead,” ex-OceanGate scientific director said.