Dark Knights

Although officially retired, many F-117s remain airworthy and are used to support limited research and training missions based on overall cost-effectiveness and their ability to offer unique capabilities. The staff (Unknown if military or contractor) tasked with keeping five or six of these birds ready to fly may indeed be called (officially or unofficially) the Dark Knights. This insignia has been seen on several F-117s. Further info to be added here as it comes out.