UFO Sighting in Chicago, Illinois on July 4th 2015 – three orb shaped objects moving mechanically in a straight line south to north

Myself and my 2 adult daughters were in our backyard watching a fireworks display. During a break in the display we observed a orange reddish object moving south to north in the sky- we thought perhaps it was a piece of firework, but this object remained intact, did not dissolve, and its motion was completely straightline, then it stopped, made a slight vertical motion, and went straight up. We lost sight of it. I thought it might have been the ISS as I am an amateur astronomer and we look out for the ISS when it is visible in our sky. But the ISS was not visible to our area on this date. We simply ignored it until, appx, ten minutes later, we saw a second orb, same color, same south to north trajectory, and we followed it north appx half a block, as far as we could see. I then told my daughter to go get my binoculars in case we saw a 3rd one. We did, almost ten minutes later. My daughter tracked this one through binoculars. She said it had a distinct round shape, no lights, and she followed it with binoculars about 3/4 of a block before she said she lost it in the night sky. Also, my younger daughter caught the object the first time on her cellphone. We have no idea what we saw, but I do know that fireworks don't travel mechanically straight the way this object did. I honestly thought we were seeing a star when it first appeared, but then it moved north. As I said, this was no firework. I told my daughter to save the cellphone video as she tried to upload it to my computer and it didn't work.