This episode's headline: Shuttle Setback; Brew-Ha-Ha; The Press for Profits; Walter Cronkite. The guests include In Washington: DON SHEA, Beer Institute; TOM SEESEL, National Council on Alcoholism; In New York: WALTER CRONKITE, Broadcast Journalist; In Huntsville, Alabama: J.R. THOMPSON, NASA; REPORTS FROM NEWSHOUR CORRESPONDENTS: JUNE MASSELL; FRED SAM LAZARO. Byline: In New York: CHARLAYNE HUNTER-GAULT, National Correspondent; In Washington: JIM LEHRER, Associate Editor