Navigator's Escort Service
Some airports of regional magnitude in Russia and the C.I.S where you might have to operate might be asking for escort navigator assistance.
It is a mandatory requirement of the Civil Aviation Authority with all non-international airports and non-international airways featuring Russian-speaking ATC only. Russian-only airways might provide for a welcome short-cut along your route saving flight-time and fuel.
Streamline OPS will offer you the most professional and experienced navigator. He will be fluent in English and provide a welcome addition to your crew.