The team investigate a car explosion with a connection to an agent who went missing six months earlier; Gibbs asks NCIS Special Agent Alex Quinn to shadow his team.
The team race to find the vigilantes responsible for a number of attacks happening every 27 minutes. Prentiss and Unit Chief Andrew Mendoza head the investigation to identify the perpetrators.
Bravo Team must protect a group of American engineers, and the dam they are constructing, from a terrorist attack. The rules of engagement demand that the team must not use their weapons unless the enemy fires first.
Kensi must help try to stop the use of nuclear weapons, after her ex breaks into a missile facility. She is shipped to the location to try and stop it going any further.
Reese, Carter and Fusco try to protect a teenager who wants to take revenge on a group of gangsters.