Question: American Sniper  is loosely based on the memoir by Scott McEwen and Jim DeFelice and what United States Navy SEAL veteran and sniper born in 1974
Sentence (from "American Sniper"): It is loosely based on the memoir "American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History" (2012) by Chris Kyle, with Scott McEwen and Jim DeFelice.
Relevant evidence: Yes