A renowned Titanic expert, a world-record holding adventurer and two members of one of Pakistan's wealthiest families are facing critical danger aboard a small submersible that went missing while descending to the world's most famous shipwreck.
The submersible Titan was reported overdue Sunday night about 435 miles (700 kilometers) south of St. John’s, Newfoundland, according to Canada’s Joint Rescue Coordination Center, spurring a desperate international rescue effort. As of Tuesday morning about 10,000 square miles (25,900 square kilometers) of the Atlantic Ocean had been searched, according to the U.S. Coast Guard.
