“despite these lethal adjustments it makes little economic sense for Kyiv to use the capital’s US Patriot air defences to shoot down the drones at a cost of $4 million per missile. Instead… part-time volunteers armed with antique guns to keep the Shaheds at bay” https://www.thetimes.com/world/russia-ukraine-war/article/drone-hunters-defend-kyiv-from-kremlins-kamikaze-attacks-r06n59nqq