A white 30 ft tic tac shaped object descended down out of the clouds and flew over the very nearby treetops.

I was visiting a previous co worker at his farm. he had a large dying tree next to his house that he wanted to cut down so he had propelled himself up the tree with a rope system and a truck and I was on the ground close send up tools using the rope system. I was looking up the tree to where he was roughly 100ft in the air when I noticed a white object decend from the clouds heading our direction. as it got closer I started yelling for everyone to look as it flew over the trees near by. I looked like it was landing in the cow field on the next property. it was solid white with no body lines or windshield and no engine noise.