Army Chief Warrant Officer Chris Aylstock, Capt. Colton Brauer and Sgt. Chris Boni battle the wildfire over Yosemite National Park, Calif., Aug. 22, 2013. The California National Guard UH-60 Black Hawks and HH-60 Pave Hawks are in full force supporting the U.S. Forest Service and California firefighters. Aylstock, Brauer and Boni are assigned to 1st Battalion, 140th Aviation Regiment.