Lockheed Martin F-22, # 91-4006, is being brought out from storage at Edwards Air Force Base to be return to service.
By Rob Shenk from Great Falls, VA, USA (F-22 Raptor) [CC BY-SA 2.0], via Wikimedia Commons
The jet is an engineering, manufacturing and development model aircraft with a Block 10 avionics, Flight Global reports.
A USAF spokeswoman says the aircraft is being modified before joining the operational test fleet.