In Tokyo, a city of 12 million, the Disaster Prevention Center operates a commandroom 24 hours a day and holds drills for everything from smallpox to missile attacks.
Police in the city said they were watching forecasts carefully and had plans in place to reopen a weather-related Silver Commandroom over weekend to deal with any emergencies if needed.
On Friday morning, the colonel returned to the staging area, where his staff had set up a forward command post -- a tent and a series of antennas in the compound yard of an abandoned three-room house with barrel-vault ceilings made of mud brick.
Col von Stauffenberg - played by Tom Cruise in the 2008 film of the plot, Valkyrie - placed the bomb in a conference room where Hitler was meeting his officials inside the "Wolf's Lair", Hitler's command post in East Prussia.