Members of the local Cossack community undergo military training at a boot camp set up by the Russkiye Vityazi (Russian Knights) military patriotic club in the village of Sengileyevskoye, south of Stavropol, March 22, 2015. A group of cossacks from the village of Kazanskaya, who are planning a professional career at the military intelligence service, has arrived at a camp for training under the leadership of professional instructors. (Photo by Eduard Korniyenko/Reuters)

Fireworks explode above Singapore's financial skyline at dusk as part of celebrations for the nation's 50th year of independence, Sunday, August 9, 2015, in Singapore. Singapore declared independence on August 9, 1965. (Photo by Wong Maye-E/AP Photo)

The Golden Gai is a sliver of old Tokyo in a modern metropolis filled with endless gleaming buildings. It's a one-of-a-kind tourist attraction, for sure. But it's also a place for a few drinks and friendly chatter among exhausted workers known as “salarymen”. Here: A man strolls through a narrow alleyway clustered with tiny bars and restaurants at the Golden Gai in the Shinjuku district of Tokyo, July 17, 2019. (Photo by Jae C. Hong/AP Photo)

Sikhs wield swords during their clash inside the complex of the holy Sikh shrine, the Golden Temple, in Amritsar June 6, 2014. Sikhs wielding swords clashed inside the compound of their religion's holiest shrine on Friday, the 30th anniversary of a controversial raid by security forces that flushed out separatist militants holed up in the temple. REUTERS/Munish Sharma

A man standing on the first cables during the construction of the Golden Gate Bridge with the Presidio and San Francisco in the background, San Francisco, California, 1935. (Photo by Underwood Archives/Getty Images)

Attendees look at Volkswagen's BUDD-e, a long distance electric vehicle, displayed during a press event at CES 2016 at The Chelsea at The Cosmopolitan of Las Vegas on January 5, 2016 in Las Vegas, Nevada. CES, the world's largest annual consumer technology trade show, runs from January 6-9 and is expected to feature 3,600 exhibitors showing off their latest products and services to more than 150,000 attendees. (Photo by David Becker/Getty Images)

In this April 4, 2015, photo, Marilia Skraba, center, of Brazil, applies makeup while waiting to compete in the Miss Viva Las Vegas contest during the Viva Las Vegas Rockabilly Weekend in Las Vegas. The event draws thousands of people from around the world. (Photo by John Locher/AP Photo)

A woman sits on a curb at the scene of a shooting outside of a music festival along the Las Vegas Strip, Monday, October 2, 2017, in Las Vegas. Multiple victims were being transported to hospitals after a shooting late Sunday at a music festival on the Las Vegas Strip. (Photo by John Locher/AP Photo)