"I'm struck by the similarity of the Titanic disaster itself." Filmmaker James Cameron and oceanographer Cmdr. Robert Ballard weigh in on the Titan submersible tragedy. LIVE UPDATES: https://trib.al/87QncRZ SUBSCRIBE to ABC News on YouTube: https://bit.ly/2vZb6yP Latest updates: http://abcnews.go.com/ Watch FULL EPISODES on Hulu: http://abcn.ws/3bzvQQn #news #titan #titanic #submersible #abcnews #jamescameron