The tourist submarine missing 12,500ft below the Atlantic Ocean has disappeared before - a former passenger has revealed.
CBS Sunday Morning reporter David Pogue says the expedition got lost for two-and-a-half hours — and the crew had to navigate it using a video game controller, a US TV correspondent has said.
The U.S. Coast Guard and rescue teams are currently scouring the waters of the Atlantic Ocean for the vessel which disappeared on an expedition to the Titanic wreckage.
