On this week's episode: One of the most elite soldiers in the world is the U.S. Army Ranger. Once a year, Rangers open the doors to their mountain training camp and let the world get a glimpse of what they can do. Next, we see where the men known as the Band of Brothers trained. Meet the paratrooper who jumped out of the first plane on D-Day and learn how many are honoring these soldiers so that we never forget their bravery and sacrifice. Then, we meet the remarkable canines that are making lif