Two weeks ago today, I woke up reading an email that Watertown was closed. The Boston, Cambridge, and Watertown police departments had sealed a perimeter. No entrance, no exit. The office was closed. I had started working for a landscape architecture practice in Watertown that Monday, the morning of the Marathon. After three months on the city’s outskirts, writing full-time, at last I had started traveling around Boston and Cambridge. The Lockdown froze the city in its novelty for me.