Kill Writer — Nelson Lowhim

Jim is a soldier in the most elite unit in the American military. Black ops. Cleans up his country's dirty laundry.
He loves it, loves working on his own, loves that he's good at it, loves that he's ridding the world of evil, one bad guy at a time.
Missions on the border between Pakistan and Afghanistan, sniping through gullies and crosswinds. It's tough work, but someone's got to do it.

One day he's handed a mission: easy kill.
He stares at the folder.
He knows the man.
A friend.
This isn't right.
He sets out to discover the truth, and realizes that he's asking the wrong questions. When he asks the right questions he learns that the choice he has to make may be the hardest one of his life.