Face the Nation on the Radio: 08/28/11

CBS News Hurricane Consultant David Bernard and Correspondents Byron Pitts, Chip Reid, and Mark Strassmann report on Hurricane Irene. Also, CBS News Chief White House Correspondent and host of Face the Nation, Bob Schieffer sits down with Retired General Colin Powell on the 48th anniversary of Dr. Martin Luther King Jr.'s "I Have a Dream" speech.