Acres: 21,900 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, 48 engines, 34 water tenders, 6 dozers Total personnel: 991 Available air support: 3 air tankers, 6 helicopters Once again, weather caused extreme fire behavior today. High winds and temperatures, coupled with single digit humidity, were the main reasons for the large 20,000 foot column.