My Son and Myself had taken His Son to Sioux Falls South Dakota on 9/24/2019. On the way back at 10:34 PM exactly 63 miles from Council Bluffs, Iowa and Omaha Ne..we saw ahead a Blinking Strobe Light in the distance ahead. We looked at each other and said almost simultaneously. What Is That? It did not appear to be moving.It Kept Strobing with a Very Bright Light. As we came near it some miles ahead, We approached the object, it did not appear to be moving, just Strobing, Brightly on and off. As we Finally met up with it, which was about m7 minutes. it was next to us, across the Field next to the interstate, with not a car in sight, and Black as can be. It was just Strobing above the Middle of this, what seemed like a Field about 500 feet above, Quietly. I looked for a Pole or some sort of Ground Support, and there was None! as we passed it I did not Notice any Red warning Lights for Aircraft. We Kept Vocal about how strange this was. Then as we passed it above ! what seemed like an empty field,it Just Disappeared!I Finally had a witness as I have seen the same entity before, but don't tell everybody. It seems best to keep it to yourself. I would have not said anything, except that my son was with me, a NO Nonsense kind of guy,