FPV drone pilot flying under a moving train. This video is unrelated to military activities and comes from neither Russia or Ukraine, but demonstrates the current state of precision piloting which is also an important part of any military FPV training. In the latter the pilots also have to deal with video and control signal jamming. Please note that in most countries this type of exercise as seen on the video is most likely illegal, as it can interfere with railway infrastructure and create a danger for the train driver and passengers.