A firefighting plane drops its load on a forest fire raging by the village of Lercas near Sardoal, central Portugal, Thursday, Aug. 17, 2017. Portugal’s government is taking the rare step of decreeing a state of public calamity ahead of a forecast rise in temperatures that authorities fear will worsen a spate of wildfires. (AP Photo/Armando Franca)

Firefighters position themselves to battle a forest fire raging by the village of Lercas near Sardoal, central Portugal, Thursday, Aug. 17, 2017. Portugal’s government is taking the rare step of decreeing a state of public calamity ahead of a forecast rise in temperatures that authorities fear will worsen a spate of wildfires. (AP Photo/Armando Franca)

Firefighters battle a forest fire raging by the village of Lercas near Sardoal, central Portugal, Thursday, Aug. 17 2017. Portugal’s government is taking the rare step of decreeing a state of public calamity ahead of a forecast rise in temperatures that authorities fear will worsen a spate of wildfires. (AP Photo/Armando Franca)

Firefighters position themselves to battle a forest fire raging by the village of Lercas near Sardoal, central Portugal, Thursday, Aug. 17 2017. Portugal’s government is taking the rare step of decreeing a state of public calamity ahead of a forecast rise in temperatures that authorities fear will worsen a spate of wildfires. (AP Photo/Armando Franca)

Water from a firefighting plane lands on firefighters’ vehicles working close to the flames of a forest fire raging by the village of Lercas near Sardoal, central Portugal, Thursday, Aug. 17 2017. Portugal’s government is taking the rare step of decreeing a state of public calamity ahead of a forecast rise in temperatures that authorities fear will worsen a spate of wildfires. (AP Photo/Armando Franca)