I had just dropped my son off at his football game an hour before kickoff, as instructed by the coach. It was cold, and with plenty of time to kill before the game started, I thought I would have plenty of time to grab a latte at the nearest Starbucks.

The front of the coffeehouse seemed normal enough. There was a decent-sized line, but it was moving swiftly. I did begin to notice that there was a large crowd of people congregating around the pickup counter, but I thought nothing of it. The store just had a bit of a mid-morning rush. Everything would be fine.