Acres: 10,400 Start date: May 31, 2013 Cause: Downed powerline Location: Valles Caldera National Preserve, NM Containment: 5 percent Fuels: Mixed conifer and Ponderosa pine Terrain: Steep, rugged Resources: 23 crews, 36 engines, 8 water tenders, 2 dozer Total personnel: 816 Available air support: 3 airtankers, 6 helicopters As expected, the Thompson Ridge Fire was very active on Tuesday night, and into Wednesday morning. As late as 3:00 am, the northeast slopes of Redondo Peak experienced downhill runs through the crowns of the trees.