Moments make a man. George H.W. Bush had more big moments than most men. At just 20 years old, Navy Lt. Bush was dive-bombing Japanese targets in the South Pacific when enemy fire shredded his plane. He bailed out, his head careening off the horizontal stabilizer. He tried to tell his two fellow crewmen to jump as well, but he never knew if they heard him. Neither of them lived. Bush never got over the guilt he felt. When the young pilot hit the water, he inflated his flotation device and then broke down and cried. He thought about his...