A diagram/map showing Rainier Aerospace's Moses Lake Flight Center 1 at Grant County International Airport in Moses Lake, Washington. Flight Center 2 is still under construction, but nearing completion. A 3rd flight center may also be constructed at Ephrata Municipal Airport in nearby Ephrata, Washington for civilian/general aviation-related activities.

Flight Center 1 is the main flight center and headquarters for Rainier Aerospace. Flight Center 1 supports research & development, X-Plane programs, test flights, component manufacturing, and final assembly of aircraft.

Serial production at Flight Center 1 includes the Enclosed Weapons Pod in full-rate production and the QLX-125 Ghost UCAV in low-rate production.