Royal Air Force FGR2 - the aircraft (coded ‘S’ with No.56 Squadron, based at RAF Wattisham, England) known in the US as an F-4M diverted to Tonopah during RED FLAG 90-1, arriving back at Nellis AFB with an F117 sticker and DON’T ASK added by USAF crews. The diversion took place on Nov. 9, 1989,
Full story with thanks to the Aviaton Geek Club
https://theaviationgeekclub.com/the-story-of-the-raf-phantom-that-made-an-emergency-landing-at-tonopah-afb-and-was-stenciled-with-an-f-117-dont-ask-zap/
Credit to Brian Johnstone for the photograph