South Korea's soldiers from anti-terrorist team take part in an anti-terror drill to prepare against chemical and drone attacks, at Korea International Exhibition Center in Goyang, South Korea on October 27, 2022. (Photo by Kim Hong-ji/Reuters)





Emergency service members wearing bio-hazard suits participate in an anti-terror drill at the Kintex exhibition centre in Goyang on October 27, 2022. (Photo by Jung Yeon-je/AFP Photo)





Members of the South Korean Police Special Operation Unit participate during national comprehensive counter-terrorism training in Goyang, South Korea, Thursday, October 27, 2022. Several governmental agencies including the country's police department, coast guard, defense ministry, fire department and intelligence agency took part in the exercise. (Photo by Lee Jin-man/AP Photo)





South Korean soldiers participate in an anti-terror drill at the Kintex exhibition centre in Goyang on October 27, 2022. (Photo by Jung Yeon-je/AFP Photo)





A visitor walks near the wire fences decorated with ribbons with messages wishing for the reunification of the two Koreas at the Imjingak Pavilion in Paju, South Korea, Friday, October 28, 2022. North Korea fired two short-range ballistic missiles toward the sea on Friday in its first ballistic weapons launches in two weeks, as the U.S. military warned the North that the use of nuclear weapons “will result in the end of that regime”. (Photo by Lee Jin-man/AP Photo)





A street in Itaewon district is pictured full of people before a stampede during Halloween festivities killed and injured many in Seoul, South Korea, in this image released by Yonhap on October 30, 2022. (Photo by Yonhap via Reuters)





Rescue workers and firefighters work on the scene of a crushing accident in Seoul, South Korea, Saturday, October 29, 2022. South Korean officials say dozens of people were in cardiac arrest after being crushed by a large crowd pushing forward on a narrow street during Halloween festivities in the capital Seoul. (Photo by Lee Ji-eun/Yonhap via AP Photo)





Emergency services treat injured people after a stampede on October 30, 2022 in Seoul, South Korea. At least 50 people were reported to be receiving CPR after suffering from cardiac arrest in Seoul's Itaewon area as huge crowds of people stampeded at Halloween parties, according to authorities. (Photo by Chung Sung-Jun/Getty Images)





Medical staff attend to a person on a stretcher in the popular nightlife district of Itaewon in Seoul on October 30, 2022. (Photo by Jung Yeon-je/AFP Photo)





A man receives medical attention, after dozens of people suffered cardiac arrest during Halloween celebrations, in the popular nightlife district of Itaewon in Seoul on October 30, 2022. (Photo by Anthony Wallace/AFP Photo)





People sit wrapped in blankets after dozens suffered cardiac arrest in the popular nightlife district of Itaewon in Seoul on October 30, 2022. Dozens of people suffered from cardiac arrest in the South Korean capital Seoul, after thousands of people crowded into narrow streets in the city's Itaewon neighbourhood to celebrate Halloween, local officials said. (Photo by Anthony Wallace/AFP Photo)





Bodies of victims, believed to have suffered cardiac arrest, are covered in the popular nightlife district of Itaewon in Seoul on October 30, 2022. (Photo by Yelim Lee/AFP Photo)





Rescuers move an injured person on a stretcher in Seoul's Itaewon district after a stampede during Halloween parties in Seoul, South Korea, 29 October 2022. At least 50 people suffer from cardiac arrest during a stampede in the Itaewon area of Seoul as a huge crowd came to celebrate Halloween, according to Yonhap news agency. (Photo by Jeon Heon-Kyun/EPA/EFE/Rex Features/Shutterstock)





Bodies of victims, believed to have suffered cardiac arrest, are covered with blankets in the popular nightlife district of Itaewon in Seoul on October 30, 2022. (Photo by Yelim Lee/AFP Photo)





Police at the scene of a stampede on October 30, 2022 in Seoul, South Korea. At least 50 people were reported to be receiving CPR after suffering from cardiac arrest in Seoul's Itaewon area as huge crowds of people stampeded at Halloween parties, according to authorities. (Photo by Chung Sung-Jun/Getty Images)





A person receives medical help at the scene where dozens of people were injured in a stampede during a Halloween festival in Seoul, South Korea, October 29, 2022. (Photo by Kim Hong-ji/Reuters)





A man covers injured people with blankets in Seoul's Itaewon district after a stampede during Halloween parties in Seoul, South Korea, 29 October 2022. At least 50 people suffered from cardiac arrest during a stampede in the Itaewon area of Seoul as a huge crowd came to celebrate Halloween, according to Yonhap news agency. (Photo by Jeon Heon-Kyun/EPA/EFE)





Injuried people are helped at the street near the scene in Seoul, South Korea, early Sunday, October 30, 2022. South Korean officials said around 50 people were in cardiac arrest and a number feared dead after being crushed by a large crowd pushing forward on a narrow street during Halloween festivities in the capital Seoul. (Photo by Lee Jin-man/AP Photo)





A shoe and a plastic halloween pumpkin are pictured at the scene where a stampede during Halloween festivities killed and injured many people at the popular Itaewon district in Seoul, South Korea on October 30, 2022. (Photo by Yonhap via Reuters)





A man bows to pay tribute next to the accident site in Itaewon in Seoul, South Korea on October 30, 2022. (Photo by Jean Chung for The Washington Post)