Speaker Nancy Pelosi was the intended target of an intruder who beat her husband, Paul Pelosi, with a hammer early Friday in their San Francisco home, a person familiar with the investigation said.  The assailant, identified by San Francisco police as David DePape, 42, confronted Paul Pelosi and shouted "Where is Nancy, where is Nancy?" before attacking him, the person said.  San Francisco Police Chief Bill Scott talks about the attack and capturing the suspect.