A/N: This is a super short chapter but it's just setting up the story. Future chapters will be longer. Oh, and I own nothing but my own characters.
The assassin tracked the archer through the high-powered scope of her rifle. He was perched on the edge of a rooftop three thousand yards away waiting on his own target. His dark hair blew in the moderate wind and his sunglass covered eyes scanned the street. His bow was in his hand, arrow nocked but not drawn. He was poised and ready but not tense. Everything about him screamed professional.
"Hello, Agent Barton," she whispered then started to hum a little tune. Rolling onto her side she reached in the pouch at her waist pulling out one of two bullets within. She held it up and turned it in the light. 'Barton' was engraved in capital letters on the casing.
The corner of her mouth quirked up in a smile as she leaked a little power into the bullet. Just enough to make it glow, to help it fly true. She continued to hum as she loaded her rifle. She wasn't sure why her employer wanted the marksman dead, or how they knew he'd be here on his own assignment, but she really didn't care. They had deposited a very large sum of money in her bank to ensure Agent Clint Barton of S.H.I.E.L.D. didn't survive the day. She'd done her research on the target and now she was here to finish the job the way it needed to be done.
She found the agent in her scope again and just kept him in her sights. He had his own job to do and she didn't wish to interfere. Before long, the archer released two arrows in quick succession then stepped away from the edge of the roof. The assassin adjusted her grip, fixed her aim and fired. A moment later Barton twisted and fell.
She continued to watch as a woman with blazing red hair joined him on the roof. Natasha Romanoff, the Black Widow. The assassin grinned at her good fortune. She had a contract for the Widow as well. She slipped her hand into the pouch at her side and drew the only other bullet from inside. Quickly she loaded the weapon with the bullet marked for the red-head and took aim once more.
Romanoff had a hand pressed against her partner's wound and the other pressed against the communicator in her ear. S.H.I.E.L.D. agents combed all the nearby rooftops but they wouldn't find the assassin. She was too far away. It was an impossible shot really. But not for her. She never missed. She aimed and fired on the red-head, smiling when she joined her partner on the roof.