It didn't matter just to which department or room the rainbow maned mare went in and through, it was always when she left that the second clapping of the doors got her on her nerves. There wasn't a coincidence anymore and Rainbow Dash knew that fact all too well. It drove her nearly to the edge of crazy during her nightly patrol. When she returned into the hallway that was leading to the mess hall again, she heard the clapper again behind her.