http://The Air Force retired its F-117 Nighthawks, but they are still mysteriously flying over Nevada — and may be the key to the US' next-generation aircraft - Business Insider
The Air Force has been doing that since 1946 with FW-190s and Me 262s, so why is it all that big of a deal? It seems every time a stealth fighter backfires or blows a gasket the news is scramming to get an answer as to why.