Journalist Terry Anderson was kidnapped and then held prisoner by Muslim extremists for seven years. On the 20th anniversary of his eventual release, National Geographic investigates his near-death ordeal as a hostage. American Hostage reveals Terry Anderson's harrowing experience from the man himself: "They beat on me. They threatened me. They would come and sit on my chest and poke guns into my neck and say, 'We kill you, we kill
