Colorado Guard unit starts Wyo. wildfire

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    CHEYENNE, Wyo.| Officials say a Colorado National Guard engineer unit training with explosives started a wildfire that has burned about 22 square miles in southeast Wyoming.

    In this picture provided by the Wyoming State Forestry Division, smoke and flames rise Wednesday morning, July 18, 2012, from a burnout set by firefighters seeking to stop the Sawmill Fire that has burned about 22 square miles in southeast Wyoming since last Saturday. Thanks to successful burnouts and light winds firefighters were able to gain 50 percent containment of the fire by Wednesday afternoon. In addition, officials say all of nearby Glendo State Park will be open on Thursday. (AP Photo/Wyoming State Forestry Division)

    The Sawmill Fire began last Saturday on the Wyoming National Guard’s Camp Guernsey training area. No structures were lost and no one was hurt, but the fire forced the state to evacuate and close the east side of nearby Glendo State Park.

    The fire is 60 percent contained, and the entire park reopened Thursday.

    Wyoming Guard spokeswoman Deidre Forster says the incident remains under investigation.

    The training area is about 100 miles north of Cheyenne. Besides the Wyoming Guard, it has been used by the U.S. military as well as various state, federal and local government agencies that need weapons and explosives training.