Several unidentified lights over Chicago

On August 1st, 2015, a night, witness was in an hotel in Chicago (Illinois). Since his room, there is a lovely view, so he took some pohots thanks to his iPhone. Later, he discovered several lights over the city.

Witness statement:

I was at Godfrey Hotel rooftop bar in downtown Chicago 8.1.15-8.2.15.
These lights were not readily visible to me at the time that the picture was taken.
This is an open-roof nightclub. There were no obstructions in my view while taking the picture. I took 3 photos of this skyline, and all of them show strange lights or anomalies over the Chicago skyline.
No sound was heard, nor was anything spotted visually at the time that the photos were taken.
The pictures were taken with an Iphone 6 camera.
I found it notable that the lights appeared in a very organized and geometric pattern.
Granted, there are plenty of helicopters and airplanes in the sky over the city at any given time. I think the photo(s) will adequately show that the possibility of this sighting being attributed to conventional aircraft is unlikely.
These pictures were taken by my iphone, and then posted on this forum, with no alteration whatsoever. I make no claims or speculations about said photos. However, I would be remiss if I did not confess that the pattern of lights in the photo did not remind me somewhat of the "phoenix lights" event.
If needed, I may be able to provide additional photos and/or information on the sighting.
Photo 1 is the most notable. Photos 2 and 3 were taken before photo 1 to my knowledge.