According to the Pentagon, around 34 US service members have life altering brain injuries. In a span of few hours, they went from having a normal brain to a end of career NFL player brain.
https://www.theguardian.com/us-news/2020/jan/24/us-soldiers-iran-traumatic-brain-injury-pentagon
https://www.theguardian.com/us-news/2020/jan/24/us-soldiers-iran-traumatic-brain-injury-pentagon
