AMERICAN EXPERIENCE He was a war hero, a war president and, of course, the father of another president. The new two-part profile "George H.W. Bush" traces the public and private lives of the 41st president from his wartime service and early political career to his tenure in the White House. His personal diaries help tell his story, along with commentary from some of his advisers and detractors. Part 2 airs Tuesday. (N/CC/HDTV/TVPG) (2 hrs.) (8 p.m. Ch. 13)