Low, slow, silent delta shaped flyer over Sunbury, Ohio.

I don’t think this was extraterrestrial but unlike any thing I’ve seen.  I was driving into town from the southeast on SR 37 on my way through town.  I noticed a very bright light, very low.  
As I was driving it first looked like it was still.  I didn’t remember a cell tower in that area or any lights on the top of the courthouse so I took notice.  It was low enough that I lost sight of it through the trees and buildings and flying slow enough, I thought it could be a helicopter.
By the time I reached the top of the hill continuing into town, it was slowly flying directly along SR 37, which is the main street of town.  I pulled over as soon as I could and stepped out of the car to get a better look.  This thing had come right across the middle of the village on a straight course from as far as I cold see it and exited the same way.  It flew directly over me.  It was a hundred to maybe two hundred feet above the ground and very quiet.  I expected it to be an airplane and be very loud but it was nearly, if not, silent. We sometimes see military helicopters from Wright-Patterson AFB in Dayton, Ohio, coming or going, usually in formation, but nothing like this.
Again, I don’t think it was ET because it had the usual marking lights but the Delta shape, silence and, altitude was strange.  We see Jets flying in low preparing to land at Port Columbus Intl Airport, never this low never this quiet and this was not heading that direction.