Colonel Vert s comments come as speculation grows around both the fate of the submersible and the company that runs the expeditions down to the Titanic, OceanGate.
The adventurous world of the British billionaire missing in Titanic submersible stuff.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from stuff.co.nz Daily Mail and Mail on Sunday newspapers.
As US rescue teams continued the search for the submersible vessel with five people aboard, retired Nasa astronaut Colonel Terry Virts said he and Hamish Harding don t really talk about risks .
A friend of British billionaire Hamish Harding, who went missing on the Titanic submarine in the Atlantic, has revealed the excited last text he received from his pal.