X marks the spot

A lot of years ago I used to listen to the radio at night. The program from Pahrump, Nevada, was hosted by an individual who was very interested in extra-terrestrial things.
One night he described in a very serious tone that there was an X above his house. His studio was in his home. He seemed to feel that "someone" had located him and marked the spot.

They're doing it now over Kansas. . .however, this one was not near our house. Whew!