Rip Titanic sub has 40 hours of oxygen left says US Coast Guard

If you're just catching up on this story, here's a quick reminder of who the five passengers on board the missing submersible are:

Hamish Harding, 58, a British adventurer who has previously been to space and - multiple times - to the South Pole
British businessman Shahzada Dawood, 48, a member of one of Pakistan's richest families and a supporter of two charities founded by King Charles
His son Suleman Dawood, a 19-year-old student
Paul-Henry Nargeolet, 77, a former French Navy diver who has reportedly spent more time at the Titanic wreck than any other explorer and was part of the first expedition to visit it in 1987
Stockton Rush, 61, the chief executive of OceanGate, the firm that operates the Titanic voyages

USA News