I was taking a break from painting my interior portions of my home. I was sitting on my back steps of my home. It was approximately 0200 to 0230 Hrs., I worked the midnight shift, and this was one of my days off. I was sitting for about 10 minutes and I felt a presence, so I stood up and turned and faced north. Looking up, I observed a dark triangle object moving slow and steady from east to west just above treetop level. The object made no sound, nor produced any light. The triangle was a silhouette against the clear moonless night at that time -- June of 1987. I was neither alarmed or scared - as I knew what I had just observed. I was excited, but I did not contact anyone or tell anyone until my wife came home from work at 0610 hrs. We both worked midnights at the local Correctional Facilities. She came home and informed me that the Alert Response Vehicle was making rounds early in the morning and reported seeing a black triangle going over the Facility. I told my wife that I saw the same object when I was taking my break from painting. We lived four blocks from the Prison Complex, with the Michigan State Ploice Post # 43 across the street from prison grounds. I went to work the next night and no one wanted to talked about it. So I kept my experience to myself. The Black UFO moved westerly at treetop level, and I lost view of it as the trees block my line of sight.