“On NASA High Range and Area 51, I spent thousands of hours tracking aircraft. Though I tracked many that I could not identify, I never suspected them of being extraterrestrial. On these same projects, I worked with many test and operational pilots. I have never heard of one suspecting that they may have spotted a UFO.
I believe a true extraterrestrial sighting would excite the world to the point that there would be millions of people leaving the city lights to stare at the heavens hoping to see whatever it is. That would be all the media would talk about.