So, if you don't believe McGaha your irrational.
...McGaha said Symington "is not a trained observer...
Exactly how does one become a "trained observer"? I never saw Observer 101 in my college course catalog.
I don't know what Symington saw. But the Phoenix lights was pretty obviously flares. I lived in Scottsdale at the time and the flares disappeared in a pattern that matched the mountains
One way is to attend an aircraft identification class. It's kind of a important skill if you don't want to be targeting your own guys, or if you need to verify that "Yep, those are Mig 23's not Mig 21's."
With some practice one can actually tell the difference between a helicopter, a fixed wing aircraft, a weather balloon, and a bird.