This episode's headline: Pacific Power; Combat Zone; Spending Limits?; Newsmaker; Marathon Man. ANCHOR: JIM LEHRER; GUESTS: JOSEPH NYE, Former Pentagon Official; CHALMERS JOHNSON, Japan Police Research Institute; AYAKO DOI, Japan Digest; STUART TAYLOR, The American Lawyer; MARGARET MILNER RICHARDSON, IRS Commissioner; BILL RODGERS, Former Marathon Winner; CORRESPONDENTS: MARGARET WARNER; ALEX THOMPSON; GABY RADO; KWAME HOLMAN; CHARLAYNE HUNTER-GAULT;