Cloaked lights in the trees

It was in November 1983, my husband, who is now retired from the Navy, was stationed at Naval Air Station Oceana in Virginia Beach, VA.  I was stationed there as well, but, this was before we were married.  My husband would often drive home from Virginia to his home in Louisville, Kentucky during long weekends, on a long stretch of highway (I'm not sure what the name of the highway was).   He had said that one time when he was driving home, he had looked out of his rear view mirror and he said that he saw four lights hovering above the trees that were along side of the road about thirty yards from his car.  He said that the lights were two red and two green.  He stopped the car and got out.  There were no other cars on the road at the time and it was around 5:00 p.m.  My husband said that he looked at the trees and saw no lights.  He looked in the rear view mirror again and saw the lights.  He looked in the mirror on the driver's side of the car and he saw the lights.  He looked at the tree and saw no lights.  He said that it was as if the lights were cloaked.  He said that he stood there for the longest time, about 15 minutes and then he went on.  My husband said that it was the strangest thing he'd seen.
Witness indicates that date of incident is approximate.  PD