Sergeant Linn is a fictional character portrayed by Mark Holton in the TV series NCIS.
In the first episode they appeared in, titled Seadog (season 1), they were 45 years old.
They appear in 1 episodes out of a total of 467 aired so far
Episodes1
Seadog
episode S1.E3 october 2003US Navy commander "Seadog" washes up dead on a North Virginia beach. 2 dead, alleged drug dealers are found nearby. All 3 are shot. NCIS, joined by DEA and FBI, investigate.