Moments after the President of the United States is sworn in, he takes possession of the "football," a briefcase that contains the most important top-secret information in the world: the country's nuclear launch codes. What other secrets have been passed down to each United States president? Why does Air Force One always appear with its left side facing the public--and how much does the president know about activating the on-board flares to repel missiles? Uncover the fascinating truths behind some of the most classified secrets in American history. Interviews with former intelligence operatives, renowned historians, and archivists show how classified information is treated in the highest circles of political power, how it's preserved throughout history, and who ensures continuity when a new leader is elected.