announcer: canadian astronaut chris hatfield spent three tours on the international space station and wrote several books on the experience, including "you were here: around the world," and also michael hill, a researcher for david mccullough, and the latest book called "dead weight, the latest crossing of the lusitania." watch these at c-span.org. announcer: the u.s. capitol, the u.s. senate earlier today failing to move forward on the soon-to-be ex firing provisions of the usa patriot act back in 2001. after 9/11, the collection of american phone records will ex buyer at midnight. we will take a look at the observatory in washington, the master clock ticking down. this is until midnight, in just a couple of seconds.