The earthquake was the strongest ever recorded in Japan, and it was followed within the hour by a wall of water that erased entire towns along the northeast coast, killing close to twenty thousand people. Then came a second crisis nobody had planned for — Fukushima's reactors failing one by one, and a slow, tense wait to find out how bad it would get, with tens of thousands evacuated from the surrounding area for years. What people remember is the quiet afterward: whole train lines stopped mid-route, phone networks down, and the realization spreading gradually that this was going to be one of the costliest disasters anyone alive had seen.