This episode's headline: Summit Overtures; Devastation. The guests include In San Francisco: RICHARD STAAR, Hoover Institute; In New York: MARSHAL SHULMAN, Columbia University; In Philadelphia: GREGORE SAMBOR, Police Commissioner; THACHER LONGSTRETH, Republican City Councilman; In Detroit: HELEN PETRAUSKAS, Ford Motor Company; ROBERT MILLER, Chrysler Corporation; Reports from NewsHour Correspondents:. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor; JUDY WOODRUFF, Correspondent