István Toperczer is a flight surgeon with the Hungarian Air Force. In his spare time, he has become one of the few individuals from outside Vietnam to be given open access to the files of the VPAF. He has made numerous visits to Hanoi, and other Vietnamese cities, in the past 25 years, and has interviewed many of the leading MiG-21 pilots from the war years. He has previously written four series volumes on VPAF MiGs for Osprey.