sentences:  The first C-141 to return came to be known as the "Hanoi Taxi", named after the writing on the flight engineer's panel by the POWs aboard the plane for the freedom flight.Arizona Senator John McCain was one of the POWs who flew home from Gia Lam on the "Hanoi Taxi".From February 12 to April 4, there were 54 C-141 missions flying out of Hanoi, bringing the former POWs home.