black craft over clement park moving sw with looked like a bolt of lightning shooting from the bottom

This happen a whilw ago. I and my brother in-lam where playing frisbee at clement park. There must have been 200-500 people in the park that day with soccer games going on and other activities. I looked straight for no reason and noticed a white dot way up in the sky. Few seconds later a black dot was fly around the white dot for a few minutes. Then all of the sudden we lost track of the objects. From the north we saw a black disc clear as day come over raccoon creek golf course- Jefferson apartment complex. It moved slowly across bowles maybe a 100 feet of the ground, it was almost like you could reach out and touck it. It looked like a lightning blot was shooting out the botom of the craft contained in a large vacuum tube. It moved southwest across the park over wadsworth. I'm surprised cars weren't skidding off the road. The whole time I and my brother in-law are saying to each other are you seeing what I'm seeing. Both of us comfirm what we saw. Then its like we came too, and found nobody else in the park. It's like they all vanished, or we lost 2-3 hrs of time. We didn't remember the event for about 2-3 months. This is the first time that I have posted anything on the internet about the unbelieveable event that day.
Witness indicates that the date of the sighting is approximate.  PD