Rio Osumi, director of Japan treasury for Intel Corp., was working on a presentation at 2:46 p.m. on Friday, March 11, when the room started to shake. She dove under her desk. The 46-year-old Tokyo native wasn’t panicked. The take-cover move she had been taught in grade school was a reflex. But Osumi knew this was different. “It was shaking violently, up and down,” she recalls. “Usually it shakes horizontally. I knew this was a bad one.” Once again the orderly world of treasury and risk management plunged into crisis as the world’s third largest economy suffered an unprecedented disaster.