Petty Officer Second Class Carnahan is a fictional character portrayed by Bradley Snedeker in the TV series NCIS.
In the first episode they appeared in, titled The Immortals (season 1), they were 26 years old.
They appear in 1 episodes out of a total of 467 aired so far
Episodes1
The Immortals
episode S1.E4 october 2003A swimmer finds the weighted body of a seaman who has disappeared from a destroyer of the US Navy. The NCIS team investigate; they find a petty officer connected with the victim and the death, and they save the skipper from an explosion.