This episode's headline: Operation Allied Force; NewsMaker; Emergency Effort; Teaching About Kosovo. ANCHOR: JIM LEHRER; GUESTS: JAVIER SOLANO, Secretary-General, NATO; BRIAN ATWOOD, Kosovo Refugee Coordinator; KAREN ABU ZAYD, United Nations; BILL FRELICK, U.S. Committee for Refugees; CORRESPONDENTS: TOM BEARDEN; CHARLES KRAUSE; TIM EWART; ELIZABETH BRACKETT; PHIL PONCE; MARGARET WARNER; KWAME HOLMAN; ELIZABETH FARNSWORTH; LEE HOCHBERG