#Russia GRU special forces in Kaliningrad are trained for sabotage attacks
Just an hour and a half by car from the Grzechotki border crossing (Poland) lies Parusnoye village (known in Lithuanian as Gaudikai). A specialized Russian GRU intelligence unit is stationed here, only a few kilometers from the naval base in Baltiysk. The unit trains saboteurs before dispatching them to conduct attacks on Poland and the Baltic states.
https://vsquare.org/russia-military-bases-threat-europe-nato/