I think you made a fundamental mistake.
Jack Steel can't die. He is Chuck Norris's brother from another mother.
Jack Steel
His Navy Seals training predestines this badass for this ungrateful job. Life under the hard conditions has turned this daredevil into a steel-hard guy who never loses sight of his goal and is always ready to sacrifice his life for all participants of the expedition. Jack Steel has only one eye and eight fingers left. As an experienced astronaut, he can operate in the most difficult conditions and assess the dangers of life-threatening atmospheres. For him, the risk is his spa and his exo-suit is his second skin.
Is that really the same person? ;)
Besides, Adrenaline in the wrong moment and too big quantity can really be lethal ...