About 30 years. Ha ha.
A UAB doesn’t necessarily “fly.”
Well these fly and were airborne. If they weren’t aerial or airborne they’d probably call them UGP’s or Unidentified Ground Phenomena. But that’s not the case. ☺
In other words, it’s all bull s**t, they’re playing with the term to get away from the old school stigma of the term, “UFO”. The government is really good at changing names and terms to fit and or to avoid stigmas, or to be politically correct, etc.