In 2012, Columbia took part in its first participation in the USAF’s Red Flag wargames at Nellis AFB, Nevada. Columbia used their Israeli made Kfir COA (Kfir C.12, heavily modified Dassault Mirage).
Video:
Vehicle I-D: 
‘DISSIMILAR’ CONTRACTED F-21 LION (KFIR)
In 2017 and 2016, the U.S. Marine Corps Air Station Beaufort, South Carolina, conducted ‘dissimilar’ air combat training, pitting contracted (Airborne Tactical Advantage Company [ATAC]) Israeli made F-21 Lion (Kfir, modified Dassault Mirage) against the super expensive F-35B.
Taxpayer funded ATAC operated F-21
F-35B Lightning-2
ATAC F-21, June 2016
F-21 Lions used to be operated by the U.S. Navy-Marine Corps.