 As Ukraine braces itself for a second full winter of Russian attacks on energy facilities, air defense units use all available resources to bolster their efficacy. Although Ukraine is banking on newer and better weapons systems to help prevent their country being plunged into darkness again, air defense units make use of all that is available, including guns and systems dating back to the Soviet era. We can see that even old Soviet era equipment works in the skilled hands of our boys. All the shots I witnessed today were accurate. All the targets were shot down, said Sariai Naiv, commander of the Joint Forces of Ukrainian Army who observed the exercise Maxim Gunn, the first fully automatic machine gun in the world, produced in 1936 for the Red Army featured prominently among other types of weaponry used by soldiers taking part in a drill conducted in central Ukrainian region of Chernihiv in November 11. Nearly half of Ukraine's energy system was damaged by Russian attacks last winter, when Moscow pummeled power plants and transformers with cruise missiles and Iranian-made Shahid drones. At times, millions of people had no electricity.