This is Jocko Podcast Number 413 with Eco Charles and me Jocko Willink.

Good evening, I come.

Good evening.

Ryan Larkin deployed on heavy combat tours between 2008 and 2013 where he would blow through thick walls and

doors fire weapons with a powerful blast and be exposed to improvised bombs.

In one video, he is seen as he stands by his fingers in his ears

as another soldier blasts a rocket launcher a few feet away. He would say to me, mom, it would just

clear out my sinuses and you could feel it. It was so unbelievable.

Jill Larkin said.

The vibrations left microscopic tears in her son's brain so small that MRIs and

PET scans couldn't detect the damage while he was living.

Survivors of explosive attacks often report headaches, difficulty sleeping, trouble concentrating,

irritability, and memory problems.

A 2017 study of eight deceased military personnel found that blast exposure produces scarring legions in the brain.

When Larkin returned home after his third tour, his brain had changed.

He was a different kid totally his mother said.

Larkin started having trouble sleeping.

He complained of headaches and became short fused. He stopped

smiling and his relationships started to erode. He deployed on his final tour in Afghanistan's

Helmand province an area with a high rate

of enemy contact. When he returned home he was more anxious and confused. He was

hard to talk to his parents said. When he was able to sleep he

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