Men wear masks as they sit in the metro in Prague, Czech Republic, 17 March 2020. According to media reports, the Czech government decided to impose a two-week quarantine in the country on the evening of 15 March, and ban all international travel from 16 March 2020. Currently 383 cases of the coronavirus SARS-CoV-2, which causes the Covid-19 disease, have been officially confirmed in Czech Republic. (Photo by Martin Divisek/EPA/EFE)

Standalone picture dated June 7th, 2022 shows Flt Lt Adam O’Hare rehearsing in the iconic Typhoon plane over Lincolnshire yesterday (Tues) as he trains for this summers airshows with vapour trails over the wing. The phenomenon is caused by low pressure areas created on the aircraft's skin and wings as it moves through moist air. As the pressure drops so does the temperature, and if the temperature reaches the saturation point, water vapor is created. (Photo by Claire Hartley/Bav Media)

A man stands in front of a display with an artificial coral inside the Davos Congress Center at the eve of the annual meeting of the World Economic Forum in Davos, Switzerland, Sunday, January 15, 2023. The site specific data sculpture by media artist Refik Anadol based on approximately one billion coral images processed by machine learning classification models. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (Photo by Markus Schreiber/AP Photo)

Villagers wade through a flooded road following heavy rains after cyclone Remal's landfall at Singi Mari village of Nagaon district, in India's Assam state on May 29, 2024. A powerful cyclone that smashed into low-lying Bangladesh and India killed at least 65 people, including in torrential rain storms in its wake, state government officials and media said on May 29. (Photo by Biju Boro/AFP Photo)

Art graduate Katie Mills with her one of her “Kheeky” face flesh bottles that forms part of her “Bottoms Up” illustration design work during the media preview of the Edinburgh College of Art graduate show in Edinburgh on Friday, August 16, 2024. The exhibition features the work of more than 350 postgraduate students, and is part of the Edinburgh Art Festival, the UK's largest annual celebration of visual art. (Photo by Jane Barlow/PA Images via Getty Images)

“The Boeing X-45 unmanned combat air vehicle is a concept demonstrator for a next generation of completely autonomous military aircraft, developed by Boeing's Phantom Works. Manufactured by Boeing Integrated Defense Systems, the X-45 was a part of DARPA's J-UCAS project”. – Wikipedia

Photo: Two X-45A Unmanned Combat Air Vehicles (UCAV) are shown to members of the news media July 11, 2002 at Edwards Air Force Base, California. The X-45A, developed by The Defense Advanced Research Projects Agency and the Boeing Company, is the first unmanned system designed from inception for combat missions. (Photo by David McNew/Getty Images)