F-22 Raptor

An F-22 Raptor takes flight, Sept. 21, 2011 on a training sortie. Four Raptors were launched as Holloman’s premiere aircraft return to the sky. The return to flight of the F-22 ensures air dominance for combatant commanders around the world. (U.S. Air Force photo by Senior Airman DeAndre Curtiss / Released)

F-22 Raptor

An F-22 Raptor taxis out to the end of the runway before takeoff May 24, 2010. Twelve F-22's from Holloman are deploying to Kadena Air Base, Japan, for approximately four months as part of a U.S. Pacific Command Theater Security Package. (U.S. Air Force photo by Senior Airman DeAndre Curtiss / Released)

F-22 Raptor

An F-22 Raptor prepares for takeoff at the end of the runway after receiving a final inspection May 24, 2010. F-22's from Holloman deployed to Kadena Air Base, Japan, for approximately four months as part of a U.S. Pacific Command Theater Security Package. (U.S. Air Force photo by Senior Airman DeAndre Curtiss / Released)

F-22 Raptor

Lockheed Martin’s [NYSE: LMT] F-22 Raptor returned to the skies today here in a series of test and production flights, the first since a four-month fleet stand down was lifted on Sept. 19, 2011 by the U.S. Air Force. Aircraft flown are preparing for delivery to the U.S. Air Force. Specific delivery schedules and flight activities are being aligned in conjunction with customer specifications and testing parameters. F-22 final assembly line schedule was not impacted by the stand down and the team continues to roll out Raptors on time, with final aircraft completing in December 2011. (Photo: Lockheed Martin)