Are Some of the UFOs Pilots Are Encountering Airborne Radar Reflectors?

Instead of anti-gravitational propulsion or flying machines from space, this possibility—and that is all it is, a possibility—has to do with specially designed radar reflector balloons and submarines, as well as a historical precedent for an obscure operational electronic intelligence gathering concept that first came to be during one of the hottest moments of the Cold War. Regardless, there is actually a historic precedent for clandestine operations where submarines launched balloons carrying radar reflectors as part of intelligence gathering operations. At a predetermined time, a US Navy submarine surfaced near Havana Bay, just long enough to time-releases a series of balloons carrying radar reflectors of varying sizes.

Source: www.thedrive.com