This episode's headline: The Final Days; Working with Fear; Shields & Brooks. ANCHOR: JIM LEHRER; GUESTS: JOHN BURNS; K.C. FUNG; RICHARD MEDLEY; MARK SHIELDS; DAVID BROOKS: CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN