American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History is a memoir by United States Navy SEAL Chris Kyle, written with Scott McEwen and Jim DeFelice. With 255 kills, 160 of them officially confirmed by the Pentagon, Kyle is the deadliest marksman in U.S. military history. The book was published by William Morrow and Company on January 2, 2012, and appeared on The New York Times Best Seller list for 37 weeks.