I've never heard of that being a disqualifier (though, not insinuating that it is NOT a disqualifier). To be honest, with all the obesity in LE, the collapse lung potential is the least of one's concerns. LOL
I don't know, but I imagine it is more about the affect of being a casualty on the battlefield than anything else, making it less important in an LE setting.
We bring evil things to evil people, kicking in a door near you!
."In theory, there is no difference between theory and practice. But,
in practice, there is."
- Jan L.A. van de Snepscheut
"The difference between 'involvement' and 'commitment' is like
an eggs-and-ham breakfast: the chicken was 'involved' - the pig
was'committed'."
-unknown
Working on a PhD in CQB one doorway at a time.
When the wolf attacks, he will find not all who run with the flock are sheep!