A fire truck drives past trees burned during the Las Conchas fire in Los Alamos, N.M., on Thursday, June 30. Firefighters were confident Thursday they had stopped the advance of the wildfire that headed toward the Los Alamos nuclear lab and the nearby town that now sits empty for the second time in 11 years, even as they battled the blaze that crept into a canyon that descends into the town and parts of the lab. (Jae C. Hong)

A fire truck drives past trees burned during the Las Conchas fire in Los Alamos, N.M., on Thursday, June 30. Firefighters were confident Thursday they had stopped the advance of the wildfire that headed toward the Los Alamos nuclear lab and the nearby town that now sits empty for the second time in 11 years, even as they battled the blaze that crept into a canyon that descends into the town and parts of the lab. (Jae C. Hong)