It stopped, the door opened and he immediately headed towards the glass door of the tower. He hadn't even taken a single step away from the closed glass door of the tall tower when he heard people screaming. 

            "Bats, bats!" were the scream of the horrified people in the city. They were running in panic fearing for their lives. He looked up and saw above the tall towers hundreds and hundreds of big bats flying rapidly towards the side of the tall towers and towards the road. "Bats, bats!” the city dwellers continued screaming aloud. They all hurried towards the entrance of the towers trying to avoid the attack of the hundreds and hundreds of flesh-eating bats. The bats continued flying down. The residents of the towers watched in horror as the flesh eating sighted bats pounded violently on their windows and on the main doors of the skyscrapers