In this October 15, 2014 file photo, Katsu Nakamura, sky division manager for Yamaha USA, moves the RMax unmanned helicopter into position before a demonstration of its aerial application capabilities at the University of California, Davis' Oakville Station test vineyard in Oakville, Calif. Researchers at UC Davis have been studying the effectiveness of the drone's ability for spraying pest control and nutritional materials on the test vineyard in California's Napa Valley. (Photo by Rich Pedroncelli/AP Photo)

In this Wednesday, June 8, 2016 photo, Joe Giles, an actor portraying a zombie in “The Walking Dead”, poses with social media reporter Danielle Datu during a walker boot camp at Universal Studios Hollywood in Los Angeles. (Photo by Jae C. Hong/AP Photo)

A model jumps during a photo shooting, in Milan, Italy, Friday, January 15, 2016. Men's fashion week starts today and will run until Tuesday, January 19. (Photo by Luca Bruno/AP Photo)

A Libyan fireman stands in front of smoke and flames rising from an oil storage tank at an oil facility in northern Libya's Ras Lanouf region on January 23, 2016, after it was set ablaze earlier in the week following attacks launched by Islamic State (IS) group jihadists to seize key port terminals. (Photo by AFP Photo/Stringer)

A model stumbles as she presents a creation by Swiss designer Albert Kriemler as part of his Spring/Summer 2020 women's ready-to-wear collection show for fashion house Akris during the Paris Fashion Week in Paris, France, September 29, 2019. (Photo by Gonzalo Fuentes/Reuters)

A demonstrator uses a slingshot during a protest against Chile's government in Santiago, Chile on November 8, 2019. (Photo by Pablo Sanhueza/Reuters)

Artists wear colourful “deconfinement hats” made of paper mache and inspired by Song dynasty headwear, for social distancing, at 59 Rivoli gallery in Paris as it prepares a general reopening later in the week, following the outbreak of the coronavirus disease (COVID-19) in France, June 3, 2020. (Photo by Benoit Tessier/Reuters)

A woman is pictured in the municipality of Iztapalapa as the outbreak of the coronavirus continues in Mexico City on May 27, 2020. (Photo by Carlos Jasso/Reuters)