They say the flying info he transferred to NVA later permitted the downing of 50 other planes.
Some thing the weird statue at the side of a Hanoi lake (where he parachuted down) is a tribute to SOMETHING McCain did for them.
It's a guy in a flaming parachute, they say. A lot of people think it's McCain.
Thats why he declined to be released early
The only reason he was not tried for treason was because President Nixon personally intervened because he wanted the to move on and not put the country trough a trial