Reports of stingray flight patterns go back to at least 2015: https://komonews.com/archive/fbi-behind-mysterious-spy-aircraft-over-seattle-other-us-cities http

Reports of stingray flight patterns go back to at least 2015: https://komonews.com/archive/fbi-behind-mysterious-spy-aircraft-over-seattle-other-us-cities https://komonews.com/archive/fbi-behind-mysterious-spy-aircr... https://bgr.com/2015/06/03/fbi-dirtbox-stingray-spy-plane-program/ https://bgr.com/2015/06/03/fbi-dirtbox-stingray-spy-plane-pr...