Firefighters in France try to hold back vast wildfire as heat returns to test their grip

French authorities evacuated nearly 4,000 people near Lacanau as wildfires worsened, with a vast blaze near Saumos stabilized at 420 square kilometers but still posing a risk due to returning heat. Firefighters and engineers worked on firebreaks, while 93 firefighters were injured battling the unpredictable fire.