Brad Meltzer on Area 51, UFOs and 'History Decoded'

Brad Meltzer new book investigates mysteries and conspiracy theories on UFO's & Area 51 and many other very interesting conspiracies. His new book, "History Decoded." is discussed with "CBS This Morning" co-hosts and he talks about a few of his favorites, including UFO sightings, and the life of John Wilkes Booth.