In 2268, Kirk and Garrovick encountered the same dikironium cloud creature on Argus X that killed his father, and two hundred crew of the Farragut, eleven years earlier. Garrovick sighted the creature but was, however, temporarily paralyzed and unable to shoot it. Kirk blamed Garrovick for his hesitation, a blunder which caused the death of two security officers. (An earlier attack, which did not involve Garrovick, killed a Starfleet Academy friend of Garrovick's, Ensign Rizzo.)
It was later discovered that Garrovick's hesitation was unintentional and that phaser fire would not have harmed the creature. Kirk allowed Garrovick to redeem himself. The two set a trap for the creature, which consisted of a container of red blood and a matter/antimatter bomb. The two beamed back to the Enterprise, moments before the bomb went off, which at the same time, destroyed the cloud creature. (TOS: "Obsession")
- He was the only minor Security or Engineering (redshirt) character to survive an away mission in "Obsession"