I had a work-study job in college at our small local airport working for the FAA. I mostly clipped new FAA communications into 3-ring binders and tore off expired ticker tape weather reports for a couple of hours a day.
My boss was old school government employee, straight and square. One day we were talking and he handed me a FAA business card with a UFO reporting 800 phone number. Odd I thought, and put it in my wallet.
Years later I lost my wallet in a phone booth (am old). I got a call from someone who found my wallet and wanted to return it. He came over with the wallet which had everything still in it, including cash. The only thing missing was the UFO card. I've never seen another one.
I think the government claimed after the first one they increased the sensitivity of the "airborne thingamajiggie" detector they have. Which is one of those answers that raises far more questions than it addresses.
Still think the occupation governments in both Washington and Olympia are a far greater threat to me than any airborne thingamajiggie, though.
ET never called me racist.