Chapter Lazdausko detachment service of protection of state border virgilius Rauhala told DELFI that he had seen April 12 helicopters held in Lithuania quite a bit of time.

"They came from Kaliningrad and flew over lake Vištytis, where the boundary runs. They were flying low, so the radar could not see, but in our area they were short-lived, pivoting briefly flew into the territory of Lithuania," said Rauhala.

A similar incident on 11 April with three Russian helicopters occurred in Poland.

Representatives of the Lithuanian army were concise. Officer of the joint staff public Affairs Thomas Rachlinski told DELFI that while relying only on information provided by the military.

"The border guards saw three helicopter visually, but none of the devices did not record them, probably because they were flying low along the boundary line, but can not trespassing until all this is only suspicion. While we can't call the model helicopters, as they were seen from afar. But from the Kaliningrad nobody but the Russians can not fly," — said Pakalniskis.

The statement that the Lithuanian military radars, located just 10 km from the scene, nothing was fixed, caused a lot of issues. Maybe the airspace of Lithuania not protected, it can fly, who wants? Maybe the military about what they say? Actually, not so simple.

"Society needs to be able to assess the information presented. We all understand, but not all can speak in public," — said DELFI Colonel-Lieutenant Ramunas Titanic, explaining how the Lithuanian radars.

Now the Lithuanian army uses old Soviet stationary radars P-18 and acquired 10 years ago in EADS for € 25 million mobile TRML-3D/32. Titanic stressed that the army post three updates in InterVarsity, Cekiskes and Deguciai. Infrastructure posts will be fully modernized by installing the long-range sensors, manufactured in the NATO country, which will replace the P-18.

In 2017 plans to complete the construction of radar stations in Prenjska and Silute regions, their operational capacity, they will change by 2019. In Ignalina district, the construction of the post will start later.

According to Titania, pilots can try to "trick" the radar, because those are limited both distance and height. Most pilots try to fly as close to the water or ground, so as not to be in the field of radar. Already one knowledge, where the radar and its technical characteristics, can help pilots to choose alternative route, and incidents such as the flight of three helicopters near the border, may be an attempt to obtain such information.

In addition, Russia has the technical means to combat radar. In particular, close to the Lithuanian border have been repeatedly seen Russian reconnaissance aircraft Il-20 and su-24MR/ML, which capture electronic signals and use the funds to extinguish the signals. However, according to Titania, when attempts are made to invite the Lithuanian action radar have not been recorded.