The Wallow Fire in Arizona is coming up on a dreadful milestone of 500,000 acres burned. That's larger than any other fire in state history. See what it looks like from the ground and from space.
The 607-square-mile blaze, the second largest ever in Arizona, is expected to reach the power lines as early as Friday. If the lines are damaged, hundreds of thousands in parts of New Mexico and Texas could face rolling blackouts.
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