"End of an era": White House photographer on George H.W. Bush's legacy

Only 11 people have ever held the title of official White House photographer. David Valdez served in that position under President George H.W. Bush. He says he visited all 50 states and 75 countries with the president, witnessing history and forging a lifelong friendship with Mr. Bush. Valdez shares his thoughts, impressions, and of course, photographs.