Your hypothesized us and them in technology development while disputing ace up the sleeve in the military tech is very naive . UFO debunkers should ask questions and so should eyewitness without ridicle on both sides. The same with todays political enviroment from debunkers who come from all sides of the political fence towards the phenomena/ unkowns. The UAP (MoD term from scientific declassified paper open ) is real and agree with long time researchers such as Don on its above top secret. Its big money and those who think its all bulldust. Never seen the real stuff. The large Triangles are real and the ability of cloaking is real just listen to Michael Schratt would be a great interview with Richard Dolan lectures as many eyewitness including myself the size of two football fields hundreds of different sections from below. The object seen by Submariners are 1000 feet long and are massive which alll data was collected and taken away after the events to extremly secure location which dont blame them if its a threat to the state. Also Tornado pilots have encountered large oval shape and cigar shape objects which played cat and mouse . Reports are taken and put into a safe . Just ask Nick Pope who cillected the good stuff as others in this field. The underground shelters have experinced odd events during the sightings and new personnel are replaced during the Cold War and no doubt it occures today as phenomena has not left.