As Gareth said, 1977 was the Have Blue, an about 2/3 scale proof of concept demonstrator, whereas 1981 was the YF-117, so you're both right actually!
The YF-117 was placed at the Blackbird Airpark at Palmdale last week alongside an A-12, SR-71 and D-21 - nice 'black' assortment of Lockheed memorabillia there!
I remember flying 'with' F-117s in GWII - well...we were DCA'ing their tankers as they came and went, but anyway - they never went anywhere without a huge 'gorilla' entourage of EA-6Bs and/or F-16CG/
Js in tow!
BTW - TTR is at 37°48'6.79"N, 116°46'37.53"W. Those who have been to Red Flag will agree that there's some fun flying to be had in this area!