When she entered the building, he broke into a run. He didn't know how much time he would have before the assassin made it to the roof, so he had to be quick. Even in his late thirties, he was in excellent shape, jumping from one building to the next with ease. This is what he was good at, quickly displacing for a better angle on a target. Within minutes, he was repelling up the building that he would make his perch. The fiber cord launcher pulled him up quickly and quietly. The building he was on was inhabited.
The corner room of the building wasn't though. It also had an escape in case of a fire. He stood on the metal scaffolding and detached the fiber cord from his wrist, letting it hang and opened a window and stepped into the room. He set up breaching charges on the window, followed by clearing a table for his rifle. He saw her on the rooftop across from him. "Taking off my helm. One second." He took off his helmet, setting it to the side. He put an ear piece in. "Testing." He laid his rifle's bipod on the table, looking through the scope. He preferred doing his the old fashioned way. He waiting in the dark room for her to give him the word, his breathing stilled, his body relaxed.
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The assassin stepped out onto the roof, already aware that she wasn't hunting anyone. She was waiting for him. "Well, well, well." He growled, his orange eyes peering from under his hood. "You weren't hunting anyone, just came here to accept your fate." He snickered. "Too lonely that you want to meet your pathetic friend again."