From at least 2004 onwards, US Navy pilots witnessed and filmed UFOs at close quarters whilst on exercises. A regime of silence was followed to avoid ridicule and damage to their careers. This changed dramatically in 2017 when video footage was leaked to the New York Times. Then the Pentagon sensationally confirmed that the footage was real. In 2023 hearings took place and witnesses came forward. The big questions remain - how do these objects achieve their unbelievable performance, and where do they come from?