Titanic sub firm faced lawsuit over 'dangerous flaws' before Titan
Titanic Artifacts Caught in International Tug-of-War
Missing Titanic sub: Just 40 hours of oxygen left on lost vessel
Highlights from Day Three as the search for the missing Titanic
Scary animation shows how deep missing Titanic sub could be
Titanic sub suffered 'catastrophic implosion'
Haunting video reveals depth of Titanic wreck amid search for
Titanic expert, adventurer, father and son are among the
Titanic submarine missing since Sunday, search underway
Inside the missing Titanic exploration sub - CBS News
Titan Submarine Found, Suffered Catastrophic Implosion — Watch