That turned out to be a false alarm, and not entirely because of Japanese missteps.

FORBES: The State of the Union? Not So Great

Steve Fussy, from the AWE, said the false alarm, which was triggered by a "sensor fault", was not meant to alert residents.

BBC: Atomic weapons base false alarm wakes neighbours

CT2WS succeeded in creating a technology kit capable not only of identifying up to 91 percent of targets during testing with extremely low false-alarm rates, but also widening a warfighter's field of view to 120 degrees when all components of the kit are used in tandem.

ENGADGET: DARPA threat detection technology uses a camera to see targets, software and soldier brains to identify them