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Pennsylvanina Power and Light power lines weave their way over Bald Eagle Mountain in Williamsport, Pa., Friday Aug. 15, 2003. The delicacy of the nation's power grid was revealed in Thursday's massive blackout, and officials,  even in unaffected areas, will be looking at whether anything can be done to prevent something like this from happening again. (AP Photo/Gene J. Puskar) Gene P. Puskar / AP Photo