Over a period of 4 yrs I have witnessed objects,with flashing lights, move across the sky (over my house) with eratic flight paths that would on occasion disappear. The flight path is alwaysEast to West. The lights have passed close enough to hear any noise but there is none. It is not unusual for multiple sightings to occur n the same evening. I never witnessed any particular matter discharged while moving across my home.In August 2014, while mowing the backyard I came across an area of grass where something had left an imprint of a perfect circle. The grass was uniformly pressed down in a counter clockwise direction. The circle was larger than a car tire and had an opening in the center.The grass itself suffered no damage or discoloration however the tree branches next to the site are discolored and appear to be dying. Other vegatation growing on the ground has what appears to be a residue charcoal grey on some of the leaves. The growth of grass in this area is stunted when compared to the rest of the yard.For sometime I have seen what appeared to be large square imprints as well as circles along the tree line in my front yard. The grass is consideraby shorter than the backyard but I could trace the outline with little effort. The tree limbs above each design along with some of the surrounding foliage is dying as well.