Inmate firefighters with the Eel River Conservation Camp march to work on a containment line at the King Fire in White Meadows, northeast of Sacramento, California September 20, 2014. Fire crews in California's rugged Sierra Nevada seized on a break in the weather on Friday to slowly gain ground against the blaze threatening to destroy 12,000 homes as it roared for a seventh day through dry timber and brush west of Lake Tahoe. REUTERS/Stephen Lam (United States - Tags: DISASTER ENVIRONMENT)