Back in 2014, US Navy pilots started spotting unidentified flying objects, almost daily, over the East Coast in America. Navy pilots reported that the objects had no visible engine or infrared exhaust plumes, but could reach 30 000 feet and hypersonic speeds. They were also able to manoeuvre in a way that would be physically impossible if humans were behind the controls. You can watch another UFO (as in unidentified flying object, not alien spacecraft) here. The same pilots who were interacting with the strange flying objects off the East Coast were soon doing bombing missions over Iraq and Syria.