 Complete the following phrase:  When Operation Barbarossa began on 22 June 1941, Gusarov was stationed with the 12th Fighter Aviation Regiment. On 5 November, he was awarded the Order of the Red Banner. On 26 December, the regiment became the 486th Fighter Aviation Regiment. In 1942, he joined the Communist Party of the Soviet Union. During the summer of 1942, he fought in the 