Masked by radiation interference, Fritz, Timmons and Evans beamed down with James T. Kirk, Spock and Leonard McCoy to investigate an attack on a mining operation on Loren V in the year 2269. They discovered 12 Klingon soldiers firing on the mine entrance. Fritz, Timmons and Evans flanked them from above to the right while Kirk, Spock and McCoy flanked from the left. They fired on the Klingons simultaneously. In response, one of the Klingons stabbed Timmons in the back. Fritz fought that Klingon hand-to-hand, got slashed in the chest by a blade, then shot the soldier. Seeing three more Klingons approaching, Fritz set his phaser on overload and threw it towards them, killing them. Evans and McCoy beamed up with Fritz. (TOS - Year Four comic: "The Enterprise Experiment, Part 3")
- TOS - Year Four comic: "The Enterprise Experiment, Part 3"
- TOS - Year Four comic: "The Enterprise Experiment, Part 4"