Mark Harmon has lived a storied life, and his childhood looks straight out of a 1950s catalog.
The beloved NCIS actor was born in California in 1951, to Tom Harmon, a Heisman Trophy-winning football player and later a sports broadcaster, and Elyse Knox, a model and actress.
He is the youngest of three; his older sister Kristin Nelson was an actress and painter — plus the ex-wife of teen idol Ricky Nelson — who passed away from a heart attack aged 72 in 2018, and his other older sister, Kelly Harmon, is also a former actress and model.
Today, Mark is still based in Los Angeles, and though he still works on the NCIS franchise as an executive producer, he and his wife Pam Dawber, who he married in 1987, and with whom he shares sons Sean, 36, and Ty, 32, lead a largely private life.
Scroll below for some of the most epic throwbacks from the West Wing actor's childhood.
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© GettyCruising
Riding with his family in the car around Los Angeles in 1956, when he would have been five years old.
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© GettyMad Men who?
Mark's parents and sisters — plus their pet Poodles — in 1956.
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© GettyLike father like son
Tom played for the Michigan Wolverines and the Los Angeles Rams, and was also a pilot during World War II.
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© GettyPicture perfect
The Harmons in Los Angeles, 1960.
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© GettyAt home
The family again in 1963.
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© GettyExpert advice
Mark with his parents in 1972, watching reruns of his football game for UCLA, where he was a quarterback.
