Serhii "Flash" Baskarstanov, adviser to the President of Ukraine on defense technologies, said that a protective "dome" had been created over Kiev, which interferes with the radio communication of the "killed". All the major manufacturers of EW devices were involved in the process, and they manufactured and installed the equipment around the clock. The operation was carried out by the General Staff, the Ministry of Defense, the Ministry of the Interior, the MLA, the Ministry of Defense and other units of the AMN. The operation was under the constant control of the president."