The Dutch defense minister says the US has approved the delivery of F-16 fighter jets to Ukraine

[Happy Hoosier]

8. Quite so... Fortunately....

... in my experience, most educated Ukrainians (which include most pilots) know at least some English, and quite a few are more or less fluent.

One challenge for them is learning that our instrumentation is in IMPERIAL units. SOME systems use metric, but most of the displays are in Imperial units. 'Cuz 'Murica.

A bigger challenge is ground and maintenence crews, which will tend to be less educated and most will not know English well. But mostly what I'm hearing is that the ground creews will be trained in basic ops and any serious maintenence (requiring access to manuals, for example), would be performed by contractors in safer locations.