This episode's headline: Defense Dollars; Collision; Sequencing Life. ANCHOR: JIM LEHRER; GUESTS: SEN. JOHN WARNER; GEN. MERRILL McPEAK (RET.); LT. GEN. PAUL CERJAN; JOHN ISAACS; IM BUSH (Ret.), U.S. Navy; SHERRY SONTAG. Journalist/Author; J. CRAIG VENTER, DR. FRANCIS COLLINS CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN