Editor's note: The Titan sub’s passengers are believed to be dead. See Axios’ latest coverage.
The massive search for a tourist submersible carrying five people that went missing in the North Atlantic during a diving trip to the wreck of the Titanic entered its fifth day Thursday, as oxygen supply concerns grow.
Driving the news: Capt. Jamie Frederick, the response coordinator from the First Coast Guard District, said during a news conference remotely operated vehicles (ROV) were searching an area where underwater noises were detected Tuesday and Wednesday.