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epaselect epa12181611 A drone unit from the 93rd Brigade of the Ukrainian Army prepare their fibre-optic FPV drones (First-person view) for flight during a training session near the Kostyantynivka frontline, in Donetsk, Ukraine, 17 June 2025. Unlike radio-controlled drones, those operating via fibre optics are immune to jamming. With unmanned vehicles playing an increasingly significant role on the battlefield, the Ukrainian government aims to boost the proportion of drones controlled via fibre-optic systems. EPA/Maria Senovilla