This episode's headline: Bracing for Combat; Making A Comeback?; Starting Over; Conversation. ANCHOR: JIM LEHRER; GUESTS: SEN. KAY BAILEY HUTCHISON, [R] Texas; SEN. JOSEPH LIEBERMAN, [D] Connecticut; SEN. JOHN WARNER, Chairman, Armed Services Committee; SEN. MAX W. CLELAND, [D] Georgia; DONNA DE VARONA, 1964 Olympic Gold Medalist; JEFFREY SEGRAVE, Skidmore College; JOHN MacALOON, University of Chicago; JOHN NABER, 1976 Olympic Gold Medalist; CORRESPONDENTS: SPENCER MICHELS; PHIL PONCE; MARGARET WARNER; KWAME HOLMAN; ELIZABETH FARNSWORTH; ROGER ROSENBLATT