Tomorrow's a big day for San Francisco. At 10:21 a.m., we have the state-wide Great ShakeOut earthquake drill, in which Californians are advised to "Drop, Cover, and Hold On." So, don't be alarmed when you hear the big siren that's normally reserved for Tuesdays at Noon.

Then, a little over an hour later, Republican presidential candidate and Minnesota Congresswoman Michele Bachmann is set to speak at the Commonwealth Club. Find out how Bachmann's proposed goals of lowering taxes and shrinking the government, along with her work defending the unborn and religious liberties, will solve America's problems. Tickets are still available.

So, get your beauty rest, San Francisco.