About 1989 or 1990, my husband, myself and three kids (the kids were all under ten) were pulling into our driveway about 8:00 on a very nice summer evening. We lived across the street from a lake. It looked like three helipcopters flying low over the lake, and we stood at looked at them for a long time. All I remember is helping the kids get their jammies on,then we all went to sleep, but it was later, like 10:30 or eleven. Missing time I guess. My husband and I still clearly remember it, the kids don't. Very weird.