AND STREETS Ends 12-Year Role in Direct Vietnam READY TO LEAVE - American soldiers The last American serviceman left South relax with their baggage at Camp Alpha Vietnam today, ending an involvement that Wednesday as they wait for departure from lasted 12 years and cost 45,943 lives. Saigon enroute back to the United States. (UPI telephoto) Final 67 U.S. POWS Released Western Newsmen Witness Farewell At Hanoi Airport CLARK AIR BASE, Philipof pines (UPI) - The final group 67 American prisoners of war returned from North Vietnam today, completing the release of 604 POWs held in Indochina when the Vietnam War officially ended 61 days aggiet's hit it!" shouted Navy Lt. Cmdr. Alfred Howard Agnew, 32, of Mullins, S.C. the last man to approach the ramp of his medical evacuation plane at Hanoi's Gia Lam airport, where Western newsmen witnessed the final release. When he arrived at this [Helicopter Shot Down Hour Later Brief Ceremony Held For Last Servicemen Before Departing SAIGON (UPI) - The United States ended its direct military role in Vietnam today after 12 years with little ceremony and a declaration by Gen. Frederick Weyand. commander of the last GIs in Vietnam, that "peace with honor has been achieved." An hour after Weyand spoke, groundfire near Da Nang brought down a American helicopter assigned to the justdisbanded Joint Truce Commission that arranged the prisoner of war exchange. Field reports said at least two crewmen suffered minor