In this October 21, 2015, file photo, a young man rides a hoverboard along a Manhattan street toward the Empire State Building in New York. More than 500,000 hoverboards are being recalled after reports that they can burst into flames. The Consumer Product Safety Commission said Wednesday, July 6, 2016, it has received 99 reports of battery packs in the two-wheel motorized scooters catching fire or exploding that causing burns or property damage. The recalled hoverboards were made by eight companies. (Photo by Kathy Willens/AP Photo)

An Indonesian boy waits as he prepares to catch offerings released by Hindu devotees of the Tengger tribe during the Yadnya Kasada festival, on the crater of Mount Bromo in Probolinggo on July 21, 2016. During the annual Yadnya Kasada festival the Tenggerese climb Mount Bromo, an active volcano, and seek the blessing from the main deity Hyang Widi Wasa by presenting offerings of rice, fruit, livestock and other local produce. (Photo by Juni Kriswanto/AFP Photo)

In this July 11, 2016 photo, a young, masked drug trafficker poses for photos holding his guns at a slum in Rio de Janeiro, Brazil. Teenagers openly tote guns while they work as guards, lookouts and distributors for drug lords operating just a few miles from where hundreds of thousands and tourists and athletes will be for the Aug. 5-21 Olympic Games. (Photo by Felipe Dana/AP Photo)

A visitor jumps for a photograph on the world's highest and longest glass-bottomed bridge above a valley in Zhangjiajie in China's Hunan Province on August 21, 2016. The bridge, which opened to the public on a trial basis on Saturday, spans 430 meters (1,410 feet) and rises about 300 meters (984 feet) above a valley in a scenic zone, making it the world's highest and longest glass-bottomed bridge according to Chinese state media. (Photo by Fred Dufour/AFP Photo)

Kendall Jenner dazzles as the face of La Perla's feminist lingerie collection in Los Angeles, California on November 10, 2016. The 21-year-old model stars in a new campaign for the brand centered on “the liberation of every woman from the need to suffer for beauty”, reports Entertainment Tonight. La Perla released photos of Jenner and fellow models Isabeli Fontana and Liu Wen in its Spring 2017 collection on Instagram this week. (Photo by Splash News and Pictures)

Members of the Indonesian Presidential Security Forces (Paspampres) show their skills during the simulation of a terrorist attack in Jakarta, Indonesia, 29 December 2016. According to reports in local media the Indonesian security forces have already arrested 21 terrorists suspects and fatally shot five of them, who were allegedly planning attacks in the Indonesian capital during the Christmas and New Year's Eve celebrations this year. The presentation was shown on the occasion of a visit by Indonesian President Joko Widodo and a delegation to the Paspampres headquarters in Jakarta. (Photo by Bagus Indahono/EPA)

UK “Ex On The Beach” star Chloe Goodman had a huge fashion disaster at a London Fashion Week event in Chelsea last night September 21, 2016, when her Christian Louboutin heel got caught in a metal grate. The former Celebrity Big Brother housemate looked embarrassed whilst trying to get her heel back after the disaster as well as cupping her top to avoid a second wardrobe malfunction. (Photo by XposurePhotos.com)

Dancers wait backstage during a dress rehearsal for the new “THE ONE Grand Show” at Friedrichstadt-Palast in Berlin, Germany, September 21, 2016. From silver body suits with giant mohawks to revealing fishnet tops with huge feathers, colourful, extravagant costumes take centre stage at a new theatrical show in Berlin. French couturier Jean Paul Gaultier has swapped the Paris runway for the German stage to create some 500 costumes for “THE ONE Grand Show”, an 11-million euro ($12.2 million) production showcasing plenty of singing, dancing and acrobatics. (Photo by Hannibal Hanschke/Reuters)