[Thunder90]

Hell week is known to injure at least 30% of participants, and yes, deaths do occur. Also, it is likely that they would have been vaccinated and boosted and then extensively screened for heart damage before starting BUD/S, including EKG’s, MRI’s and extensive blood work looking for such damage. If any sign of such damage was there they wouldn’t be allowed in to BUD/s until it resolved.

[EEGator]

Injured is most commonly serious shin splints bordering on broken lower limb.
There’s also numerous fall, or blunt trauma injuries.
It’s not common for candidates to just drop dead.

[JoSixChip]

then extensively screened for heart damage before starting BUD/S, including EKG’s, MRI’s and extensive blood work looking for such damage.

No, they don't do EKG's and MRI's as preventative care or screenings. That's just an idiotic thing to suggest.