Pre-press unveiling, they were testing the triangle shaped stealth bombers over the white sands missile range in NM, people in Las Cruces and El Paso would call in UFO sightings.
All people are seeing DoD technology.
They are way ahead of the general public and let us see the old stuff.
For example, the F-117 was already flying in the early 70s. When was that finally released to the public?
At the time we were sill talking about the F-4 Phantoms that were used in Vietnam. They were even test flying the F-4 in the early 1950s.