Toby Harnden: First ones to fight after 9/11

The managing editor of the Washington Examiner discusses his new book, "First Casualty: The Untold Story of the CIA Mission to Avenge 9/11" (https://books.google.com/books/about/First_Casualty.html?id=T7w6EAAAQBAJ&source=kp_book_description).