Triangular shaped craft brushes apple tree in Columbiana County, Ohio

In the evening my father (a teacher & community leader) and I were outside in the backyard.I was approximately 12 years old at the time. I am now a retired police sergeant. We heard a faint hum then out of a dense woods across the road. At tree level we saw an elongated triangular shaped craft. It was just above the tree lines and was moving South to North.  Dad and I watched as the craft, now silently glided directly over our yard and ourselves. The craft was so low that it brushed the top of an old apple tree in the backyard.The tree was probably a story and a half high.I will always recall looking up at the bottom of the craft. It looked like I was looking at the underside of the a nearby railroad bridge (girders, supports.)There also appeared to be a large square in the center of the craft. I am unsure if the square was a door(opned or closed) or a structure. The craft rose rapidly as it glided northbound then zipped outa sight to our east. The apple tree's leaves turned brown and curled up, like live brush exposed to a fire. The tree's interior subsequently dry rotted, the tree died and Dad had to cut it down. Dad and I discussed this event until his death August 2001. My children all heard their grandfather tell the same,unchanged facts about the event.
Date is approximate.  PD