A tunnel with electric switches are seen in Josip Broz Tito's underground secret bunker (ARK) in Konjic, October 16, 2014. In the early 1950s, Josip Broz Tito, the late leader of the former Yugoslavia, ordered the building of the secret bunker, located 900 feet (270 m) underground and near the Bosnian town of Konjic, to safeguard the country's ruling class in case of a nuclear attack. Construction at the complex, which had a cost equivalent price tag of $4.6 billion, continued until 1979, the year before Tito died. (Photo by Dado Ruvic/Reuters)

Police in riot gear hold back demonstrators against U.S. Republican presidential candidate Donald Trump outside the Hyatt hotel where Trump is set to speak at the California GOP convention in Burlingame, California, U.S., April 29, 2016. (Photo by Noah Berger/Reuters)

Homeless people receive free food offered by the Telangana state governement during a 21-day government-imposed nationwide lockdown as a preventive measure against the COVID-19 coronavirus in Hyderabad on March 26, 2020. (Photo by Noah Seelam/AFP Photo)

Flames from the County fire burn above Cache Creek Casino Resort on Saturday, June 30, 2018, in Capay, Calif. (Photo by Noah Berger/AP Photo)

In advance of Fleet Week performances, U.S. Navy Blue Angels fly above San Francisco with Team Oracle aerobatics pilots Sean D. Tucker and Jessy Panzer on Thursday, October 10, 2019. (Photo by Noah Berger/AP Photo)

Women practice “katte samu”, a rural traditional self-defence martial art during a workshop organised by the The Department of Language, Art and Culture of Telangana state for the upcoming International Women Day in Hyderabad, on March 6, 2020. (Photo by Noah Seelam/AFP Photo)

Noah, 10, cools himself off in his garden during hot weather in Hertford, Britain, June 25, 2020. The UK is experiencing a summer heatwave, with temperatures in many parts of the country expected to rise above 30°C and weather warnings in place for thunderstorms at the end of the week. (Photo by Andrew Couldridge/Reuters)

Children of a vendor pose with demon-masks to be hung outside homes believed to ward off negative energy during a government-imposed nationwide lockdown as a preventive measure against the COVID-19 coronavirus, at a roadside stall in Hyderabad, on April 18, 2020. (Photo by Noah Seelam/AFP Photo)