Grant is the Enterprise security officer in Friday's Child who reaches for his phaser on seeing a Klingon among the Capellans and is instantly killed by a thrown kligat.
Grant is a red-shirted security officer of the USS Enterprise who beams down to Capella IV with Kirk, Spock and McCoy at the start of the Original Series episode Friday's Child. The landing party has come to negotiate a mining treaty for the rare mineral topaline.
McCoy, who once lived among the Capellans, has warned the others about the people's touchy sense of honour and their skill with the kligat. On arrival, however, Grant sees the Klingon Kras standing among the welcoming party and instinctively draws his weapon.
A Capellan warrior reacts faster and kills him with a kligat. Kirk is furious at the loss of a young crewman, but the Capellans regard the death as the natural outcome of Grant's threatening gesture, and the landing party has to give up its weapons.