Aerial Emery trains on the cyr wheel at the Aloft Loft circus training and teaching school which was converted from a church, in Chicago, Illinois, U.S., September 20, 2016. (Photo by Jim Young/Reuters)

Ukrainian emergency workers spray a plane with water hoses as part of a rescue training exercise at Boryspil International Airport outside Kiev, Ukraine, September 27, 2016. (Photo by Valentyn Ogirenko/Reuters)

Miss Venezuela 2016 beauty pageant contestants take part in a practice session and media presentation in Caracas, Venezuela October 3, 2016. (Photo by Marco Bello/Reuters)

Men ride a motorcycle in front of destroyed houses after Hurricane Matthew passes Jeremie, Haiti, October 7, 2016. (Photo by Carlos Garcia Rawlins/Reuters)

A truck carrying gold miners across the Sahara desert to far northern Niger drives outside Agadez, Niger, May 9, 2016. (Photo by Joe Penney/Reuters)

A model poses at the Hashe presentation during Fashion Forward Spring/Summer 2017 at the Dubai Design District on October 21, 2016 in Dubai, United Arab Emirates. (Photo by Cedric Ribeiro/Getty Images)

A participant in costume poses to a camera after a Halloween parade in Kawasaki, south of Tokyo, Japan October 30, 2016. More than 130,000 spectators turned up to watch the parade, where about 2,600 participants dressed up in costumes, according to the organiser. ((Photo by Kim Kyung-Hoon/Reuters)

A person dressed as Republican presidential nominee Donald Trump participates in the Greenwich Village Halloween Parade in Manhattan, New York, U.S., October 31, 2016. (Photo by Andrew Kelly/Reuters)