Thousands of firefighters labored to contain the four wildfires raging across the Los Angeles area Saturday before evening winds forecasted to fan additional flames. In the Pacific Palisades, incarcerated firefighters dug wide trenches across the charred landscape in an attempt to contain the blaze, which has been called the most destructive in the city’s history. Across the city, in Altadena, first responders dragged hoses over burned-out cars and rebar. In Mandeville Canyon, where the Palisades fire grew closer to the UCLA campus – prompting evacuation orders across the Brentwood and Encino neighborhoods – firefighting planes dropped water and retardant in