A number of photos surfaced on social media late Tuesday that appear to show an F-117 Nighthawk conducting low-flying maneuvers in Nevada, not far from the Nellis Test Range and the air strips in the dry lake bed that was once Groom Lake, more commonly known as “Area 51.”

The pictures, which were first uploaded to Instagram by user NeilJackson10 and first published by The Aviationist, show the distinctive silhouette of what was once one of America’s best-kept secrets. The F-117 was America’s first operational stealth bomber, despite its “F” prefix which, the story goes, was used to entice the Air Force‘s top fighter pilots to pursue flying the classified bomber. The Lockheed-produced aircraft first took to the skies in 1981, and was officially retired from active service in April of 2008.

So what was one of these stealthy aircraft doing conducting a low-altitude flight with what appears to be some hard banking in Nevada, more than a decade after being put out to pasture? Well, as NEWSREP has covered before, America’s fleet of F-117s has been maintained in a sort of “flying retirement,” in which many of the aircraft are kept in flight-ready condition. Around four of these jets are dismantled every other year, ensuring that even its dated stealth technology doesn’t fall into the hands of American opponents in nations like Russia and China with stealth programs that are still developing. But with 52 F-117s in “flyable storage,” dismantling four per year still leaves a number of aircraft to tool around in.