text: InFocus: Drone Proliferation in Russia-Ukraine Conflict & Homeland Security ImplicationsCommercial drone use during the Russian invasion of Ukraine has demonstrated the effects that simple and cheap airborne Intelligence, Surveillance, and Reconnaissance (ISR) tools can provide. Last week, the Ukrainian Ministry of Defense called for citizens in Kyiv with drone pilot experience to join “Unit 112 of the Kyiv City Special Brigade”. Since Russia invaded, Ukrainian citizens are reported to have requested simple commercial drones and spare parts from friends and businesses in allied countries. The delivery requests asked for batteries to be charged prior to delivery for immediate use. These small drones are lighter, harder to visually detect, and significantly quieter than the average military drone despite having limited range.