An Armatix employee holds a “smart gun” by the company at the Armatix headquarters in Munich May 14, 2014. The gun is implanted with an electronic chip that allows it to be fired only if the shooter is wearing a watch that communicates with it through a radio signal. If the gun is moved more than 10 inches (25 cm) from the watch, it will not fire. A Maryland gun shop owner has dropped his plan to be the first in the United States to sell the so-called “smart gun” after a backlash that included death threats. (Photo by Michael Dalder/Reuters)

Soldiers use electronic sensors to search for missing firefighters under a line of fire trucks caught in massive gas explosions in Kaohsiung, Taiwan, Friday, August 1, 2014. A series of underground explosions about midnight Thursday and early Friday ripped through Taiwan's second-largest city, killing scores of people, Taiwan's National Fire Agency said Friday. (Photo by Wally Santana/AP Photo)

A young couple rest in a football field after a forest fire devastated Santa Olga, 240 kilometres south of Santiago, on January 26, 2017. Six people – among them four firefighters and two police – have now been killed battling vast forest fires in central Chile, officials said Wednesday. Multiple blazes have ravaged 238,000 hectares (588,000 acres) and are growing, the National Forestry Corporation said in a statement. (Photo by Pablo Vera Lisperguer/AFP Photo)

A man rides his horse next to Kosovo's coal-fired power plant near the town of Obilic on May 30, 2022. Two coal-fired power plants, Kosova A and Kosova B, are the main source of the alarming air pollution levels in Kosovo, and particularly in the town of Obilic, which is located between the two plants and near to their ash disposal sites and open-pit lignite mines. (Photo by Armend Nimani/AFP Photo)

A firefighter is seen next to flames while working to extinguish a wildfire burning in Gondomar, northern Portugal on July 29, 2025. Almost 2,000 firefighters battled on July 29, 2025 to contain forest blazes across Portugal that have led to almost the whole country being put on high alert for fires. Ten major fires blazed with two in the north and three in the centre of the country causing most concern. (Photo by Carlos Costa/AFP Photo)

Waverly Fire's Tell Hanes, left, and Southeast Fire's Trey Wayne, right, jump over freezing water to high five while participating in a Surface Ice rescue technician course on Friday, January 6, 2023, at Holmes Lake Park in Lincoln, Neb. The International Rescue and Relief department at Union college held rescue training course at Holmes Lake for students and local fire departments. (Photo by Kenneth Ferriera/Lincoln Journal Star via AP Photo)

Flames quickly grow as firefighters set a backfire on the eastern front of the Park Fire, which has grown to 360,141 acres and is 12 percent contained, on July 28, 2024 near Chico, California. Strong winds and dried vegetation fueled the fire that exploded 70,000 acres in the first 24 hours after a man allegedly pushed a burning car into a ravine to intentionally set the blaze. (Photo by David McNew/Getty Images)

Purev and Buyantogtokh enjoy the warmth of the fire in the snow in Altai Mountains, Mongolia, September 2016. Navigate the snowy wilds of Mongolia with this nomadic reindeer herding family. Photographer Joel Santos dived 1000km into the depths of Northern Mongolia to visit the Ganbaa family near Khovsgol Lake. (Photo by Joel Santos/Barcroft Images)