Piers asks David about the likelihood of survival and he explains that due to the way the vehicle was constructed and having no communication that there is a slim to no chance of being able to find the vehicle in time.
Michael then becomes emotional whilst describing his personal experience of being down that far in a submersible which was stuck for an extended amount of time and the feeling of being "utterly hopeless". He describes it as an "awful feeling" and sympathises with the people on board and their families for what they must be going through.