He could have gone after a country music crowd but I'd think more likely, he was just shooting at an open crowd; is it any wonder, it would take awhile to find him and if the music was loud, you might not be aware for awhile what was going on.
http://www.bbc.com/news/world-us-canada-41466116 (link)
Now, we will have to rethink about large gatherings per security.
3 football fields away and I saw another excerpt, 400 yards away.
A lot of unconfirmed info out there, 2 windows broken out, 110 feet separate from each other. I don't know if I believe that.
One sees from the graphic, how easy it would be to cause havoc in this manner.