Well CNN has it live as it develops and it is informative to see how people there are reacting. I have no intention of being judgmental but at this same time it's learning point.
Hundreds of people are swarming in panic mode back and forth between terminals, parking buildings and airport tarmacs reacting to running armed officers attempting to run back and forth in sweeps of areas. It reminds me of sheep reacting to sheep dogs moving in a controlled manner, but at the same time the sheep are being driven by fear.