I have no doubt they are genuine. As a child in the late 1940s my parents and I saw brightly glowing discs in three formations moving slowly over our house. Each disc was about 50feet in diameter and so bright it hurt the eyes to look at them, and at an altitude of about 300feet.
They were accompanied by an intense thrumming noise and moved slowly over our houses for a couple of minutes before they moved off rapidly into the dark night sky. Don’t bother scoffing, I know they are real, I’ve seen them -rod