Also it's said USAF has been flying flanker(in area 51?) for evaluation for years.
now US privite company openly offer flanker for Red flag training!!
http://www.militaryphotos.net/forums/sh ... p?t=156704
check photo in this thread.. it seems flanker flying in Red flag for a long while
http://www.militaryphotos.net/forums/sh ... 704&page=7
so.. today it's valid to have mig29/su27/30 sq in falcon Nevada scenerios - plus aggressor-skinned F14/15/16/18!
BTW.. i think the gobal flanker customers - especially the major users in real life - should feel extremely upset hehehe.. as the aerodynamic and basic electroptical characteristics are well studies by US, the only thing they can do is upgrading the avonics/radar. imo US airpower can handle flanker threat pretty well..and CIS better work hard on nex gen fighter - if they have $$$.