From their base near Kupyansk, a team of Ukrainian drone pilots is locked in a high-stakes aerial battle.
They're using inexpensive drones to try to take out Russian unmanned aircraft before they can strike.
One pilot who goes by the call sign Raymond zeroes in on a Russian-made Supercam drone, which isn't equipped to observe an attack from the rear.
"It can't see you. It doesn't realize it's about to die," Raymond says.













