April 16, 2016 Tarkio: That's Over There In Missouri... April 16, 2016/ AirDailyX Flight FSX/P3D. A joint effort between developers Aviana Simulation and EthnicFSX is Gould Peterson Municipal and Military Airport in Tarkio Missouri. The team says it will soon be finished. No word yet if it will be free or payware. Check it out.