Mirrored spherical object approx the size of a large motor vehicle hovering motionless and noiseless in the sky due east of the mchenry dollar general on hwy 49 on 10/09/18 at approx 1813. the object sat motionless in the sky for several seconds approx 500 to 1000 feet from the ground then appeared to make some quick lateral and vertical movements covering large expanses seemingly instantaneously, still noiseless and without any warm up. then the object made a slower, more gradual climb vertically up through the thick cumulus cloud above it and disappeared. it did not appear to come out of the cloud. moments later, 3 black helicopters came from due west headed ese and fanning out once they crossed over hwy 49. they continued in a se direction until out of view.