Actress Oh In-Hae and director Ahn Sang-Su arrives for the opening ceremony of the 16th Busan International Film Festival (BIFF) during the press conference at the Busan Cinema Center on October 6, 2011 in Busan, South Korea. The biggest film festival in Asia showcases 307 films from 70 countries and runs from October 6-14. (Photo by Chung Sung-Jun/Getty Images)

Miniature spring-wound 35-mm film camera in a modified cigarette pack. The Tessina’s small size and quiet operation provided more options for concealment than most commercially available models. (Photo by Central Intelligence Agency)

Charli XCX arrives for the 30th Annual ARIA Awards 2016 at The Star on November 23, 2016 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Mercury and Maia, fueled and overhauled, are waiting in the Tay at Dundee, for favorable weather to start the flight to the Cape, a distance of 6,370 miles. The composite machine moored in the Tay River, at Dundee, on September 23, 1938. (Photo by AP Photo)

School teachers and staff members take part during an active shooter training at James I. O'Neill High School in Highland Falls, New York, U.S., December 12, 2017. (Photo by Eduardo Munoz/Reuters)

East Berliners crossing into the West Berlin on November 11, 1989 at the Potsdamer Platz, Germany. (Photo by Kai Wiedenhoefer)

An Ethnic Kayan also know as a Long Neck girl sits at her parents souvenir shop in the Kayan village at the northern province of Chiang Rai, Thailand, July 16, 2018. (Photo by Soe Zeya Tun/Reuters)

Dancers resting on the rooftop of the SKD Theatre Asakusa, Tokyo, 1949. (Photo by Tanuma Takeyoshi/The Guardian)