Timothy Farragut "Tim" McGee () is a fictional character from the CBS television series NCIS. He is portrayed by Sean Murray. McGee specializes in cybersecurity and computer crime, and is a graduate of Johns Hopkins University and MIT. Murray appeared as a guest star in eight episodes of the first season of NCIS; in season two he joined the main cast and was added to the opening credits. In season twenty, Murray became the show's new main lead. Background McGee was born in Bethesda, Maryland, on September 13, 1978, to an Irish American family. He spent his childhood in Alameda, California, as his father was a naval officer stationed there. His parents bought him his first car—a 1984 Camaro Z28 5-speed—the day he turned sixteen. However, he crashed into a bus while trying to figure out how to use the windshield wipers. He got a student pass the day he got out of traction. He earned a Bachelor of Science degree in biomedical engineering from Johns Hopkins University and a Master of Science degree in computer forensics from MIT. His college GPA was 3.9, as he failed a fencing class in his sophomore year. He worked at the NCIS field office in Norfolk, Virginia, before being transferred to the headquarters in the Washington Navy Yard, a move made permanent at the end of the season two episode "See No Evil." McGee has a younger sister, Sarah, who is played by Troian Bellisario (Murray's stepsister in real life). Sarah attends Waverly College and intends to be a writer like her older brother. Development Characterization Special Agent Timothy McGee, commonly referred to by Special Agent Anthony DiNozzo as "Probie", "McGeek", "McQueen", "McGoo", "Probie wan kenobi", "McProbie", "Baldy McBald", "McDigit", "Timmy MaGee", and even "Elf Lord", is part of a major case squad led by Special Agent Gibbs. He gained his field agent status when he was transferred to Washington from Norfolk. In addition to responding to crime scenes and conducting investigations (along with the rest of the field team), McGee also serves as Gibbs' computer consultant and frequently assisted Abby Sciuto in the forensics lab when necessary. During the first few seasons, McGee was portrayed as timid and inexperienced. In the Season 3 episode "Probie", he was visibly shaken after killing his first suspect, even though it was in self-defense and his teammates backed him in the subsequent investigation. When questioned about