Russia's attack drones are flying higher and faster. A Ukrainian air defender says old machine guns aren't enough to kill them anymore.

Source: Business Insider

Ukrainian mobile air defense units use truck-mounted machine guns to shoot down Russian drones. Photo by Yevhenii Vasyliev/Global Images Ukraine via Getty ImagesRussia's drone attacks have become more complex and difficult to defend against. A Ukrainian team leader overseeing a mobile air defense unit said the drones fly faster and higher.