’There is no excuse for what happened here’: Director James Cameron on Titanic sub tragedy

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: Latest updates: Watch FULL EPISODES on Hulu: #abcnews #titanic #titan #jamescameron #implosion #submersible