Grant Woods played Lieutenant Commander Kelowitz, a security and tactical officer of the Enterprise, in three first-season episodes: The Galileo Seven, Arena and This Side of Paradise.
Grant Woods appeared as Kelowitz in three episodes from the first season of The Original Series.
In The Galileo Seven Kelowitz leads one of the search parties sent down to Taurus II and reports the death of a crewman at the hands of the planet's giant inhabitants. In Arena he is part of the landing party at the ruined outpost on Cestus III, scouting the Gorn positions for Kirk during the mortar bombardment. He is seen again among the crew affected by the spores in This Side of Paradise.
The character was a rare example of a named officer outside the regular cast who recurred across several stories. Woods, who had many television credits in the 1960s, died in 1968.