ABC News’ Phil Lipof spoke with “Titanic” film director James Cameron and Robert Ballard, the first person to locate the Titanic wreckage, as the search for the missing sub comes to a tragic end. 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 #abcnews #titanic #titan #jamescameron #implosion #submersible