An oil and gas waste water tank soars through the sky after an explosion on Friday, April 18, 2015 near the Greeley-Weld Airport in Greeley, Colo. An oil tanker was struck by lightning causing a fire to spread to two other trucks and the storage tanks behind.? Firefighters have extinguished the blaze.   (Kelsey Brunner/The Greeley Tribune via AP)
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