First responders are working at the crash site MOSCOW, May 4. /TASS/. Russian air defenses destroyed two more Moscow-bound drones, Russian capital’s Mayor Sergey Sobyanin said. "The defense ministry’s air defense forces repelled an attack of two Moscow-bound drones," he wrote on Max. "First responders are working at the crash site." Earlier, Sobyanin reported that a drone had crashed into a residential building in west Moscow. No casualties were reported.