#Poland continues to strengthen its eastern border The Polish Border Guard has announced a plan for the engineering development of 112 km of the border with #Ukraine – 69 km along the Nadbużany Border Detachment and 43 km along the Bieszczady Border . As part of the work, a new type of border security alarm system will be installed. This system consists of a continuous metal fence equipped with underground seismic sensors, daytime and thermal imaging cameras, fiber-optic communication lines