Riccioni, Colonel Everest E. "Description of our Failing Defence Acquisition System." Project on government oversight, 8 March 2005. Note: "This event, which occurred during the Kosovo conflict on 27 March, was a major blow to the US Air Force. The aircraft was special: an F-117 Nighthawk stealth bomber that should have been all but invisible to the Serbian air defences. And this certainly wasn't a fluke—a few nights later, Serb missiles damaged a second F-117."