In 'Raven Rock,' Garrett Graff describes the bunkers designed to protect U.S. leaders in the event of a catastrophe. One Cold War-era plan put the post office in charge of cataloging the dead. His book is now out in paperback. Also, film critic Justin Chang reviews the new Elvis documentary 'The King.'
Robert Mueller started as director of the FBI a week before the Sept. 11 attacks. We talk with journalist Garrett Graff about Mueller's leadership style, his reputation in Washington, and what might happen to the current investigation of the Trump campaign if Mueller is fired as special counsel.