From my limited sample size (helping suicidal Vets) I concur.

Supersonic pressure wave destruction beneath the grey matter creates such a need to escape confused thought that they seem beyond the help of talk therapies that I know about.

Perhaps just knowing about the powerful urge for suicide as a self induced relief from those kind of injuries and suffering could help separate the Vet from seeking suicidal relief. If they could live long enough for time to heal such wounds is uncertain. Coma therapies are also untested.