"Redshirt" is a term used to describe the Star Trek extras portraying minor Starfleet officers. Throughout the original series, redshirts frequently accompanied the show's three main characters James T. Kirk, Spock and Leonard "Bones" McCoy on away missions and would more often than not get killed during the mission. As the Star Trek franchise has expanded into its sequel series', the redshirt tradition has continued, even though the Starfleet uniforms have changed, so "redshirt" is used as a general term for all Starfleet extras, not just those who wear red uniforms.
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