Protagonist and ex-Delta Force hero Jon Reznick is now a contract employee of the FBI reporting directly to FBI Assistant Director Martha Meyerstein. What appears to be a Islamist terrorist attack in the planning stages is actually a rogue CIA operation to kill the US president. While Hard Kill can be listened to as a stand alone novel it ends with the key terrorist target escaping. It certainly has elements of a cliffhanger finish. Narrator Jeffrey Kafer, best known for his performances of sci-fi audio novels, does a great job with this series.
The Jon Reznick series novels are fun listens.