OceanGate's former engineer tells hearing he wouldn't ride in Titan submersible for his own safety 

Tony Nissen was the first witness at the U.S. Coast Guard’s Marine Board Investigation, which aims to learn more about the Titan's implosion near the wreck of the Titanic. Nissen told the hearing on Monday of several concerns he had with Titan, which were downplayed by OceanGate’s CEO Stockton Rush. The CBC's Heather Gillis reports.
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