A commuter exits a closed off station after a subway train derailment, Tuesday, June 27, 2017, in the Harlem neighborhood of New York. A subway train derailed near a station in Harlem on Tuesday, frightening passengers and resulting in a power outage as people were evacuated from trains along the subway line. The Fire Department of New York said a handful of people were treated for minor injuries at around 10 a.m. It said there was smoke but no fire. Delays were reported throughout the subway system. (Photo by Mary Altaffer/AP Photo)

Two robotic legged squad support system (LS3) machines by the Defense Advanced Research Project Agency follow a technician during a demonstration at Joint Base Myer-Henderson Hall, Virginia, on September 10, 2012. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans via The Atlantic)

Masked up revellers hit the town in Sheffield, United Kingdom on October 10, 2020 before the Prime Minister introduces a three-tier lockdown system that will see hospitality venues shut in virus hotspots. (Photo by London News Pictures/The Sun)

“Jet Man” Richard Browning demonstrating Gravity, a human jet suit system, at the opening of the Army's Personnel Conference held at Farnborough International Conference Centre, Farnborough, Hampshire on Tuesday, November 2, 2021. (Photo by Steve Parsons/PA Images via Getty Images)

Nicaraguan army members carry a participant playing the role of a victim during a national multi-hazard drill organized by the National System for Prevention, Mitigation and Attention to Disasters (SINAPRED), in the 30 de Mayo neighborhood in Managua, Nicaragua, September 26, 2016. (Photo by Oswaldo Rivas/Reuters)

US M142 High Mobility Artillery Rocket System (HIMARS) is launched as journalists film during a military exercise in Capas, Tarlac province, Philippines, 13 October 2022. The Philippines hosted simultaneous combat drills with the United States, South Korea, and Japan to improve interoperability in times of conflict. (Photo by Francis R. Malasig/EPA/EFE)

A replica of the Wall-E character is remotely controlled with a mobile phone by Bolivian student Esteban Quispe, 17, in Patacamaya, south of La Paz, December 10, 2015. Quispe built the Wall-E robot using materials he obtained from a rubbish dump in the town located in the Andean highland region. He hopes to mechanize agriculture in Patacamaya by making use of robots that operate on solar energy, Quispe told Reuters. (Photo by David Mercado/Reuters)

Jan Kara (R) and Jan Holan pedal their boat, made with plastic bottles, on the Elbe river near Kostelec nad Labem July 15, 2014. Jan Kara, a 22-year-old student, and Jakub Bures, a 22-year-old car mechanic, built the 10-metre (32.8-feet) long boat from 5000 plastic bottles strapped to a wooden frame. (Photo by David W. Cerny/Reuters)