Chris Kyle
Chris Kyle was a retired U.S Navy SEAL. He began his Navy SEAL career in BUD/S training. BUD/S training is arguably the hardest military training in the United States. Chris Kyle is the Most lethal sniper in U.S military history with over 150 confirmed sniper kills. With almost double unconfirmed sniper kills according to Kyle. Chris Kyle has spent 10 years fighting terrorists. Chris Kyle wrote American Sniper and his 2013 Book American Gun. Chris Kyle is obviously very knowledgeable about what he writes about.