>> president kennedy was cut down before he could finish his first term and his story is different. he's overwhelmingly popular with americans today, much more so than when he was alive. jfk is the most popular president of the last half sentry with a 90% approval rating. i want to begin tonight with a man who stood by the kennedys on that tragic day 50 years ago. client hill is a secret service agent who jumped on the back of the presidential limo and haunted for decades. his new book is "five days in november" and client hill joins me now. thank you so much for joining me. of all the people who remember this day, you were the one who was closest to what happened. you were the agent who jumped on the back of that limousine and realized instantly what had happened to the president of your country. tell me how you're feeling today