Crowds watch a procession of emergency service vehicles during a memorial for U.S. Forest Service firefighters Tom Zbyszewski, Andrew Zajac, and Richard Wheeler, who died fighting the Okanogan Complex fire, in Wenatchee, Washington, August 30, 2015. So far this year, U.S. wildland blazes have claimed the lives of at least 13 firefighters, four more than were killed in the line of duty during all of 2014. (Photo by David Ryder/Reuters)
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