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Mark Greaney

Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Mission Critical , Agent in Place , Gunmetal Gray , Back Blast , Dead Eye , Ballistic , On Target , and The Gray Man , he traveled to more than fifteen countries and trained alongside military and law enforcement in the use of firearms, battlefield medicine, and close-range combative tactics. He is also the author of the New York Times bestsellers Tom Clancy Support...See more