As far as I know, yes, I read the article The Accuracy of Lone Survivor's Narrative. Among the heroic acts in the somewhat sensationalist narrative of Lone Survivor is a true story based on a 2007 non-fiction book. The book is called Lone Survivor: The Eyewitness Report of Operation Red Wings and the Lost Heroes of SEAL Team 10, and it is an incredible true story retold by Berg and his team.