Tom Hanks and the crew reveal a behind-the-scenes look at the extraordinary dedication, innovation, humor and heart it took to create "The Americas."

A new special celebrating the nation's milestone 250th birthday, showcases iconic American species whose deep connection to the land and the nation's history have left an indelible mark on the country. From the majestic bald eagle to fearless bison and clever sea lions, each animal reflects a brave American spirit worth honoring.