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Winter Weather NC.JPEG-07aeb.jpg

Gov. Pat McCrory and other state officials hold a briefing in the state Emergency Operations Center in Raleigh, N.C. on Thursday, Feb. 13, 2014. McCrory directed the State Highway Patrol and almost 50 National Guard teams in Humvees statewide to search out and recover trapped drivers and help anyone seen walking after Wednesday's storm system brought traffic to a virtual standstill in the Research Triangle area. (AP Photo/News & Observer, Corey Lowenstein)

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Power company crew members prepare to work on a downed power line that fell near Emory University after freezing rain, sleet and snow toppled trees and power lines during a winter storm on Wednesday, Feb. 12, 2014, in Atlanta. Over 175,000 residences and businesses statewide were without electricity. (AP Photo/David Tulis)

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Berries and buds are encapsulated with ice as freezing rain, sleet and snow continues to accumulate on trees and power lines during a winter storm on Wednesday, Feb. 12, 2014, in Atlanta. (AP Photo/David Tulis)

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Some of the 300,000 computer-controlled mirrors, each about 7 feet high and 10 feet wide, reflect sunlight to boilers that sit on 459-foot towers. The sun's power is used to heat water in the boilers' tubes and make steam, which in turn drives turbines to create electricity Tuesday, Feb. 11, 2014 in Primm, Nev. The Ivanpah Solar Electric Generating System, sprawling across roughly 5 square miles of federal land near the California-Nevada border, will be opened formally Thursday after years of regulatory and legal tangles. (AP Photo/Chris Carlson)