WASHINGTON - Fatherhood and ambition. In Fred Thompson's life, they rise and fall together, a recurring couplet in the nostalgic story of a Tennessee fella who's guided more by life's surprises and others' expectations than he is by any master plan. Consider: * The small-town jock called "Freddie" and "Moose," who, at 17, upon getting his high school girlfriend pregnant, married her, heeded her politically connected family and made something of himself. * The divorced U.S. senator, lawyer, lobbyist and actor who dropped out of politics when one of his three grown children died from a prescription drug overdose. *...