Back around the July 4th terror alerts, I sat down and tried to think where and what form the next attacks would take. I figured airplanes were probably knocked down the terrorists' list because of all the security and passenger reactions. Car bombs would be locally effective but wouldn't have the dramatic effect of 9/11, so people, nationwide, would almost be more relieved than terrified. A nuke would be their ideal but I don't believe they have the capability in the US yet.
Where I ended up was with the thought that if a terrorist wanted to really terrorize, he would randomly and anonymously attack individuals in the heartland of America. Then, no where would seem safe. I thought it would have been somewhere in the mid-West but I suppose they could have picked Maryland and Virginia. I would not be the least bit surprised to find out this was the case with these shootings.