Dunkin' Donuts stores in Watertown open between 5:00 AM and 6:00 AM. The MBTA suspended transit at 5:30 AM. Ergo, the stores were already staffed and/or open wh

Dunkin' Donuts stores in Watertown open between 5:00 AM and 6:00 AM. The MBTA suspended transit at 5:30 AM. Ergo, the stores were already staffed and/or open when the lockdown went into effect. For those employees, "shelter in place" meant staying in the store. Which in many cases had already opened for the morning. It's not a huge leap from that to staying open.