This book tells the story of three boyhood friends that grew up and reconnected for a trip across Europe. Anthony Sadler, Spencer Stone (a member of the United States Air Force), and Alek Skarlatos (a member of the Oregon National Guard) stopped a terrorist named Ayoub El-Khazzani when he boarded a passenger train determined to commit as many murders as possible. He had a pistol, AK-47, and a box cutter. His motivation was to attack American travelers and get revenge for bombings in Syria. Stone was cut in the neck, hand, and head with the box cutter, while subduing the man with a chokehold. Skarlatos whacked him in the head with his weapon they took from him to help subdue him. Other passengers stepped in to tie him up until they reached the train station for police to take custody. Stone saved a passenger that had been shot by shoving his fingers in the guys neck to stop the bleeding until they were able to get an ambulance, which he did despite his injuries. Ayoub El-Khazzani was given a lifetime deportation from France, and a sentence of life imprisonment. All of the men who stepped in to subdue him were made Knights of the Legion of Honour. This was a good book about how troublemaking kids eventually grew up and made good lives for themselves, and helped out so many people by being men of action and character. I liked this book a lot, and when I finished it, I watched the film.