https://www.ptsd.va.gov/public/PTSD-overview/basics/what-is-ptsd.asp
https://navyseals.com/nsw/bud-s-basic-underwater-demolition-seal-training/
http://www.independent.co.uk/arts-entertainment/films/features/american-made-tom-cruise-barry-seal-real-life-true-story-cia-drug-smuggler-informant-pablo-escobar-a7911081.html
https://navyseals.com/nsw/seal-code-warrior-creed/
https://www.dmagazine.com/publications/d-magazine/2013/april/the-legend-of-chris-kyle-01/
https://navyseals.com/nsw/bud-s-basic-underwater-demolition-seal-training/
http://www.independent.co.uk/arts-entertainment/films/features/american-made-tom-cruise-barry-seal-real-life-true-story-cia-drug-smuggler-informant-pablo-escobar-a7911081.html
https://navyseals.com/nsw/seal-code-warrior-creed/
https://www.dmagazine.com/publications/d-magazine/2013/april/the-legend-of-chris-kyle-01/