UFO Sighting in Chicago, montrose beach, Illinois on 2018-06-16 00:00:00 - I thought it was a kite but then it was shiny, lead surface, 2 flying objects .Rhey were diamond shaped

My husband, a friend and i were watching my daughter's volleyball game at montrose beach in chicago. i looked up and i thought i saw a kite but then i realized it was too far away and they were two diamond shapes and were shiny and black. they were almost like a metallic color. they were moving around quickly probably over a mile above our heads and then quickly flew away towards lake michigan. at first we thought they were drones because we saw drones earlier but these were not. i've never seen anything like this before. the whole thing lasted probably 30 to 45 seconds. i did not have enough time to get a camera or even think about it.