There have been 10 meltdowns in the past 13 months that have prevented the NSA from using computers at its new Utah data-storage center, slated to be the spy agency's largest, according to project documents reviewed by The Wall Street Journal.
One project official described the electrical troubles—so-called arc fault failures—as "a flash of lightning inside a 2-foot box." These failures create fiery explosions, melt metal and cause circuits to fail, the official said.
This summer, the Army Corps of Engineers dispatched its Tiger Team, officials said. In an initial report, the team said the cause of the failures remained unknown in all but two instances.