There was no way out. A forest fire raced through central Portugal Sunday, killing 62 people — many of them trapped in cars as flames cut off their escape route. France, Italy and Spain have sent water-dropping aircraft and reinforcements to assist the 2,000 firefighters still working to control the blaze. It’s believed to have been sparked by lightning during a “dry thunderstorm” where rain evaporates midair, and high winds combined with 104-degree temperatures have fueled the flames. Prime Minister António Costa has declared three days of national mourning.