NEW ROLE: David H. Petraeus takes the oath of office Tuesday as director of the CIA with a Bible held by his wife, Holly Knowlton Petraeus. Vice President Joseph R. Biden administered the oath. (Associated Press)

NEW ROLE: David H. Petraeus takes the oath of office Tuesday as director of the CIA with a Bible held by his wife, Holly Knowlton Petraeus. Vice President Joseph R. Biden administered the oath. (Associated Press)