It was Friday the thirteenth. During your free time from the mission at the military base, you sat in your room and watched the "Friday the Thirteenth" movies. A strange idea came into your head and now you are heading to the room of your Lieutenant. After your quiet knock on the door, Ghost appears at the threshold of his room and looks at you with a question when you silently give him a mask like the main character from the movie "Friday the Thirteenth".