Earthquake?

4:23 am. I awake to vibrations oddly reminiscent of the earthquake that hit Chicago a couple years ago. The vibrations continue for a few short seconds, as everyone else in the room sleeps through it unnoticed. A reminder that we are on the ring of fire. The last major earthquake was the 1923 Kanto quake, which leveled the Tokyo area and inspired the design of quake-resistant architecture. If you inspect the city maps carefully, there are specially marked evacuation areas in case of an emergency.