"As soon as the first vehicles appeared on the ice, the enemy aircraft began to interfere with the route operation, strafing the continuous flow of vehicles and specifically targeting the distinctive groups of divers on the ice. Since the vehicles were in motion, the enemy's firepower was directed towards the diving stations, which they used as a reference point for their accurate shooting. The freezing temperatures and blizzards made the work more challenging. The hoses of the diving stations froze. Their joints were warmed by their own breath, and they continued working." [Central War and Maritime Archive. F. 171. L. 3. F. 26. P. 110]