Idunno, there were typically 2 sets of cutting edge places like the skunk works, one public, one you didn't know. For example there was a sub basement at building 12 hughes clever city, they built the wobbling goblin alongside the stuff at Palmdale, TRW had employees everywhere and teams trying to mislead all over. Macdac even had odd stuff at the long beach airport next to their production facilities for the DC9. Even had places in high bay bldg 350 HAC that I wasn't allowed to be in even with my clearances and a need to be there. You patiently waited outside until what you were after came out to you.