However, quadcopter drones do not necessarily only smuggle drugs across the border, but there are also cases where weapons and other prohibited items are smuggled into prisons around the world. Quadcopter drone crime is also occurring in Europe. In August 2021, a police officer in the Czech Republic seized a quadcopter that was transporting a sachet of methamphetamine. See also AeroVelo Atlas (2013) human-powered helicopter Modular design References External links UPenn GRASP Laboratory ETH Zurich Research on Quadrotors FAA UAS Model Aircraft Operations safety guidelines TED Raffaello D'Andrea: The astounding athletic power of quadcopters