Acres: 21,089 Start date: May 31, 2013 Cause: Downed powerline Location: Valles Caldera National Preserve, NM Containment: 50 percent Fuels: Mixed conifer and Ponderosa pine Terrain: Steep, rugged Resources: 20 crews, 49 engines, 32 water tenders, 5 dozers Total personnel: 1,003 Available air support: 3 air tankers, 6 helicopters Today, firefighters continued an aggressive direct attack on the southeastern side of South Mountain to complete the final leg of the southeastern perimeter of the mountain.