U.S. President Richard Nixon announced that all U.S. servicemen taken prisoner had been accounted for .
During this , 591 POWs were released to U.S. authorities ; this included a few captured in Laos and released in North Vietnam .
U.S. President Richard Nixon announced that all U.S. servicemen taken prisoner had been accounted for .
During this , 591 POWs were released to U.S. authorities ; this included a few captured in Laos and released in North Vietnam .