Guo Han [compiler / Observer: Guo Han] in April this year, the U.S. Department of defense released the video of “unidentified aerial phenomena” for the first time, making Congress worry that these “UFOs” may threaten the US military, and even doubt whether they are “black technology” of China and Russia. To this end, the United States plans to strengthen the investigation of eyewitness incidents, and will establish a special investigation team led by the Deputy Secretary of defense. < p > < p > the US Department of defense will announce the establishment of a new task force in a few days to investigate “unidentified aerial phenomena” captured by military aircraft, cable day said, citing two officials familiar with the situation. David Norquist, deputy secretary of defense, will personally lead the investigation. < / P > < p > if true, this news means that the US Department of defense has paid more attention to UFO investigation. In the past, the work was led by the US Navy, because many recorded “unidentified air phenomena” were encountered by naval aircraft. < p > < p > from 2007 to 2012, the United States allocated US $22 million annually to conduct a secret investigation called the advanced flight threat identification program (aatip). The plan was eventually halted on the grounds that “other projects need more money.”. < p > < p > after the Pentagon released the video in April, the US Senate Intelligence Committee voted in June to require the US military and intelligence departments to provide public information about the “unidentified air phenomenon” incident, fearing that it might pose a security threat to US bases or military exercises. Mark Rubio, chairman of the Senate Intelligence Committee, said in an interview last month that the flying objects appeared in US military bases and exercise airspace, “and we don’t even know which side they come from and whether they are our own, so there is reason to ask this question.” Rubio still talks about China and Russia as usual, but rarely discredits them. “In fact, we’ve seen some kind of technological progress by the Chinese, the Russians and other American rivals. To be honest, it might be better if these [UFOs] came from outside the earth < p > < p > on April 29, the Pentagon released for the first time three previously leaked “unidentified air phenomena” encounter videos, saying the purpose was to “clarify misunderstanding.”. The video was shot between 2004 and 2015 and was first leaked by the New York Times and a company at the end of 2017. < / P > < p > in the video, the fast-moving UFO was captured by an infrared camera, and the US pilots on the scene speculated that it might be a “UAV”. The US science magazine “popular machinery” once described the maneuvering of these objects in the air, “which is impossible to achieve with the current human aviation technology”. < / P > < p > previously, the U.S. military has labeled such sightings as “unmanned aerial systems.”. For example, CNN obtained a March 26, 2014 report from the U.S. Navy security center in May this year, saying that the plane encountered an “unmanned aerial system” whose size “seems to be the size of a suitcase.”.