FBI Special Agent Mark Monroe is a fictional character portrayed by Aaron D. Spears in the TV series NCIS: Los Angeles.
In the first episode they appeared in, titled The Silo (season 9), they were 46 years old.
They appear in 1 episodes out of a total of 323 aired
Episodes1
The Silo
episode S9.E7 november 2017Kensi is transported to a missile launch facility to help thwart a takeover of nuclear weapons.