Avoid facial expressions that are inconsistent with the serious and determined mood of the soldiers. Avoid inauthenticity in Soviet military uniforms. Avoid lack of encrypted communication equipment. Avoid excessively bright or subdued lighting that does not convey a mysterious mood. Avoid blurring details of soldiers and environment. Avoid unsuitable colors for cold, gray weather. Avoid lack of gloomy and tense atmosphere in the military base. Avoid missing framing focused on soldiers and communication equipment. Avoid lack of realism in the details of uniforms and equipment. Avoid a lack of sense of secrecy, tension and mystery in the image.