There was something refreshing about standing on top of a building, by herself, no one else to worry about or bother her. She hadn't had a solo mission in way too long. Before going in, Sarah checked to make sure that the tracking device she had placed on the target hadn't moved. And it hadn't. Good. She slipped the GPS into the case clipped to her belt and ran along the rooftop, sticking to the shadows and staying as quiet as possible.