In February 2025, Ukraine's Unmanned Systems Forces unveiled the "Silkworm," a domestically-made modular fiber optic spool. This new technology is not without significant drawbacks. Video footage of Lyman, Donetsk, shows entire rows of houses and a field draped in sheets of translucent wire left behind by the aircraft. These drones usually have fiber optic cables between 5 and. This is the byproduct of a transformative (and terrifying) new weapon called the fiber-optic-guided first-person view (FPV) drone. These devices, with cables the width of dental floss, are designed to evade electronic detection, posing a fresh challenge to air defences.