Reminds me of that guy that was trapped at the bottom of the sea for like 48 hours and when they realized he was alive the divers operator or whatever they call the guy on the radio from the base ship was just immediately like "Keep him calm! Keep him calm!" I'm just imagining the bitter irony of surviving 48h under the fucking ocean only to drown while excitedly panicking when help arrives (fortunately they did keep him calm and he did make it, just with some pretty horrific PTSD iirc).
I remember watching a doc on it with the anesthesiologist or whatever thinking he was dooming them if anything happened along the way. Even something simple as breaking the seal on their masks would cause them to drown.