Lara Macy
Lara Macy (portrayed by Louise Lombard) first appears in the episode "Legend" as the Operations Manager of NCIS' Los Angeles branch, known as the Office of Special Projects. Macy first met Gibbs eighteen years prior to the events in Los Angeles, when she was a Lieutenant in the USMC military police and Gibbs was a USMC Gunnery Sergeant. Macy was one of the few characters to ever find out about Gibbs' murder of Mexican drug dealer Pedro Hernandez, and their relationship was volatile at best as a result of it until OSP's operational psychologist Nate Getz reveals to Gibbs that Macy had been protecting him because she felt his actions against Hernandez were justified. Macy is murdered in "Patriot Down". Her killer is revealed to be Jason Paul Dean, a disgraced Army Ranger who officially worked as a mercenary for Colonel Merton Bell, but was secretly in league with Paloma Reynosa and the Reynosa drug cartel.
In NCIS: Los Angeles, it is implied that Lara Macy was removed due to political differences at a budgetary meeting, although this may have been idle gossip.
Read more about this topic: List Of NCIS Characters, Other Characters, Deceased