Me, Jack and Cubby headed down to Soldiers Field at around 8:30pm just as it was getting dark to do this because it's the widest open space I know so there was no chance of accidentally getting some trees and such in the background. After getting the camera exposed so there was no light coming in, I set up the flash and after diving to safe it from falling and smashing, we got on with taking some pictures.
Here is the rough set-up diagram of what was going on, obviously in some the flash was on the other side/directly in front but you get the idea from this.
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