All sources used
American Sniper: Pages 20-250
Time Magazine: http://time.com/3674546/chris-kyle-american-sniper-interview/
D Magazine: https://www.dmagazine.com/publications/d-magazine/2013/april/the-legend-of-chris-kyle-01/
Time Magazine: http://time.com/3674546/chris-kyle-american-sniper-interview/
D Magazine: https://www.dmagazine.com/publications/d-magazine/2013/april/the-legend-of-chris-kyle-01/