The Story Behind One of America's Deadliest Battles In Afghanistan

The Story Behind One of America's Deadliest Battles In Afghanistan
Afghan police stand by burning tires during a protest, in Kabul, Afghanistan, Monday, Sept. 17, 2012. Hundreds of Afghans burned cars and threw rocks at a U.S. military base as a demonstration against an anti-Islam film that ridicules the Prophet Muhammad turned violent in the Afghan capital early Monday. (AP Photo/Ahmad Jamshid)

It's called "The Outpost: An Untold Story of American Valor." It's a story about one of America’s deadliest battles in Afghanistan. ABC'S Jake Tapper is the man behind the book.