There are missions well above 90% death rate which are very valid. Kamikaze attacks on wars. Chernobyl water release. And so on. You wouldn't apply the same psy

There are missions well above 90% death rate which are very valid. Kamikaze attacks on wars. Chernobyl water release. And so on. You wouldn't apply the same psychological tests on those volunteers as you would on a ISS mission. You'd just thank them as they go.