Strange Sound Poland 18.12.2017
What do you think it was? Secret jet engine sound, sonic booms, drone or something else?
Recorded via Galaxy Note 4, 21:34 18.12.2017
Nearest civil airport - 56 km
Nearest military airport - 187 km
What do you think it was? Secret jet engine sound, sonic booms, drone or something else?
Recorded via Galaxy Note 4, 21:34 18.12.2017
Nearest civil airport - 56 km
Nearest military airport - 187 km