News Would-be-passenger on Titan sub told ‘Good Morning America’ safety concerns caused him to quit June 21, 2023Isabelle Butera, USA TODAYComments Off on Would-be-passenger on Titan sub told ‘Good Morning America’ safety concerns caused him to quit One of the first people to sign up for the Titanic submersible mission, and friend of Hamish Harding, said he pulled out due to safety concerns.