USAF Based on "Flogger-B" operated by the VVS in the early the had variable geometry wings and a less sophisticated Saphir radar, known to NATO as the "Jaybird", and a very basic avionics suite that severely limited its effectiveness.
GERMAN AIR FORCE . LUFTWAFFE TAKTISCHES LUFTWAFFENGESCHWADER 31 "BOELCKE" NÖRVENICH, 28.10.2016 125. Jubiläum Spirit of Oswald Boelcke 1891-2016 Zum 100. Gedenktag Hauptmann Oswald Boelcke - 28.10-1916 + 28.10.2016 60. Jahre Bundeswehr - Wir.Dienen Deutschland