As North Osteen Ministry of Interior Affairs informs, additional troops of emergency plat, units of interior army and armored technique drew up to airport. "The goal is to control all territory of airport, which is 15 kilometers in perimeter, in order to avoid penetration of criminal groups or to repulse possible attack", - reported source in republic Ministry of Interior Affairs. 3 lines of pre-flight passenger examination operate in airport. Auto transport is examined at entrance to airport, another examination is held at entrance to waiting room by cynologist with dog, check-up of passengers and their luggage takes place just before boarding on a plane. Runway is also under control. Analogous security measures are taken at railway station in Vladikavkaz. All trains are checked by cynologists trained to find explosives. Passengers are examined by metal detectors. Photos of rebels from illegal armed units and criminals in search of especially serious crimes are posted up in airport and railway station.