Two thimble shaped U.F.O.s fly over head in broad daylight and make no sound. Bronze in color

This was some time ago, I have never reported this until now. It was a wonderful summer day in upper Mich. The time was around 12 O'clock noon and not a cloud in the sky. My step brother and myself were sitting on a barn roof looking into a big field where they would make hay. There is a tree line in the distance. Looking at the tree line I noticed two, what I thought were planes coming strait at us but they made no sound at all. As they got closer I could see, they were what I would call thimble shaped. The only way to discribe the color of them is, like polished bronze. They were at about tree top level and they just kept coming, and still not a sound. These things were in a formation, as like a lead ship or whatever and the other, alittle behind and off to the side. They got over head and that was to close for me .I jumped off the roof and ran as fast as I could to the house with my step-brother in tow. I know it sounds insane but none the less, a true story. I watched them fly off out of sight from the safety of the house. That day has and will haunt me for the rest of my life....…
Date is approximate.  PD