Sheepdog - Gideon Shepherd, #1

You can never outrun your past. Gideon Shepherd, an asset for the shadow organization HALO, is haunted by the ghosts of his past. When his once friend, Victor Gregory-leader of the terrorist group, Black Wolf resurfaces and threatens New York City, Gideon knows what must be done. Now, with countless lives at stake, Gideon and his team must prevent a catastrophic attack with a next generation weapon.
A weapon he helped perfect. A weapon Victor is preparing to use. Facing betrayal, a ruthless enemy, and organizations looking to wipe the slate clean, Gideon and his team will risk it all-to save a city from destruction.