NCIS Season 19 has undergone major changes, with Gibbs off finding peace in Alaska, Bishop on an undercover assignment, and Knight joining the team full-time. Alden Parker is the new leader after he let Gibbs go in a serial killer case and was fired from the FBI. The transition hasn't been conflict-free, with Torres not warming up to Parker yet. For now, Parker has been trying to keep it easy but real challenges will come when he has to act as the boss and dole out punishments or stop someone from going rogue. It remains to be seen how the team will respond to his leadership.