He made an appearance as Lieutenant M. Fincke in the last episode of "Star Trek: Enterprise": Season 4, Episode 22: "These Are the Voyages..." Fincke received credit as a Hologram Engineer in the end credits. His colleague, Terry Virts, was invited to appear as well. While in space and orbiting Earth, he was able to chat with
Scott Bakula via space-to-ground link and was later awarded with a "Starfleet Award" (actually a trophy-size replica of the Starfleet emblem) for his work on board the ISS.
