Mark sighed and looked out at the night sky. He was standing on the roof of his apartment building, four stories up. Sometimes Mark just liked to stay up here and reflect, it was quiet and peaceful. Looking down you could see the normal hustle and bustle of city life but if you looked up you could see the beautiful sky, and sometimes even a full moon or some stars. Mark walked along the border of the roof that helped keep him from falling to his death. It was pretty late so he should be going back down to his apartment soon. Then he saw something waving in the wind a few meters away. Mark walked over to it and…