Lone Survivor the movie is based off the book of the same name written by Marcus Luttrell, a Navy SEAL.
Michael Murphy was part of the same unit as Luttrell. Enemy forces killed Murphy during the attack that Luttrell chronicles in his book, and the United States eventually awarded Murphy the Medal of Honor.
I attended a Media Research Center event in 2008 and the MRC presented a seven-minute video on Michael Murphy. This video is well done; emotional at times but not overly maudlin. If nothing else, the remarks from Bill Kristol at the start of the video are well worth watching and a scathing indictment of our culture.