It followed behind us for three miles. Appeared to be triangle shape with three lights. Made no Sound.

This was in 1981.  I've never reported it to anyone until now.  I lived far away from town at the time.  I was nearly home on my way back from getting groceries in Weatherford, OK.  It was dark.  My son was with me.  
Three lights in a triangular shape started following us.  I was scared because I couldn't get away from them.  I pulled in our driveway and got out of the car.  The lights were there and they were close.  I didn't hear any sound.  My son and I ran quickly into the house to get my husband ((name deleted)).  My son came in the house yelling and grabbed Steve and pulled him outside, but when we got outside it was gone. 
((My son)) sit out in the middle of a peanut field the next night, in his pickup, watching the sky.  He never saw anything else.  Whatever it was, was silent, had three lights in a triangle shape, and followed us for a few miles down the road in my station wagon.
Date may be approximate, although the witness does not indicate that fact.  PD