Marty Deeks (Eric Christian Olsen) and Kensi Blye (Daniela Ruah) are going to be at the front and center of the upcoming NCIS: Los Angeles season 12 episode 16. Titled "Signs of Change," the couple will be working together and they will be teaming up with someone new within the department.

In NCIS: Los Angeles season 12 episode 16, Deeks and Kensi are seemingly going on a rescue mission. This is going to be crucial for both of them as they need to race against time. The duo must help someone, whose group met a tragic incident.

As the synopsis of NCIS: Los Angeles season 12 episode 16 notes, a military-grade technology has been stolen. A deaf engineer named Sienna Marchione (Raquel McPeek Rodriguez) is the only member of the team to survive the theft. Determined to serve her country, she needs the help of Deeks and Kensi.

The couple tries to track down the military-grade tech before the people who are after it will take it out of the country. This is going to be a dangerous mission for Deeks and Kensi, so they may need the help of others -- including G. Callen (Chris O'Donnell) and Sam Hanna (LL Cool J).

However, it looks like it would be challenging for them to get the military-grade tech back on their side. As Fatima Namazi (Medalion Rahimi) suggests, the exoskeleton suits could make a person invisible while working out in the field. Their major problem is that the armor fell into the wrong hands.

NCIS: Los Angeles season 12 episode 16 sees most of the team finding a way on how to get this military-grade tech back. At the same time, they also need to protect Sienna Marchione, especially since she's the only surviving member of the team and she witnessed what happened.

Deeks and Kensi, in particular, will be doing whatever they can to protect both the exoskeleton suit and the deaf engineer. This storyline may not be wrapped up immediately and will continue in the next few episodes, considering that the current installment is nearing its ending.

Only three episodes were left in the police procedural, but the good news is that season 13 was already renewed. The series is likely setting up big stories in the finale and it could leave a major cliffhanger, bringing more stories to explore in the next installment.

NCIS: Los Angeles season 12 episode 16 airs on Sunday, May 9, on CBS.