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Pepco using infrared, helicopters to check 650 miles of power lines this week

Credit: Courtesy Flickr/Pepco

Pepco using infrared, helicopters to check 650 miles of power lines this week

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Pepco using infrared, helicopters to check 650 miles of power lines this week

Pepco using infrared, helicopters to check 650 miles of power lines this week

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