Utah National Guard spokesman Lt. Col. Hank McIntire says the wildfire is now moving away from an artillery practice area, but it has gotten as close as a few hundred yards. Officials worry about what could happen if it marches back.
The Pinyon Fire on Utah National Guard's Camp Williams about 40 miles southwest of Salt Lake City has scorched about 4.7 square miles since it was started by lightning on Sunday. It is 40 percent contained Wednesday morning.
McIntire said the practice area covers hundreds of acres and has collected shells for nearly a century, since 1914.
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