The Last Ship has some new company. Deadline reports Troy Doherty and Leo Oliva have joined season five of the TNT TV show.

The naval drama centers on the crew of the USS Nathan James, which must try to find a cure for a deadly virus that has wiped out most of the world’s population. The cast includes Eric Dane, Bridget Regan, Adam Baldwin, Charles Parnell, Travis Van Winkle, Marissa Neitling, Christina Elmore, Jocko Sims, Bren Foster, and Kevin Michael Martin.

On The Last Ship, Doherty will be playing “Clayton, a cadet at the U.S. Navel Academy who becomes Chandler’s protege” and Olive has been cast as “Pena, the scariest of Octavio’s special operators.”

Season five of The Last Ship is slated to premiere on TNT in 2018.

What do you think? Do you watch The Last Ship? Are you enjoying season four?