A Starfleet admiral who tells Captain Picard in 2370 that the USS Hera, commanded by Geordi La Forge's mother, has disappeared.
Admiral Marcus Holt is a Starfleet flag officer. He appears in the episode Interface, played by Warren Munson.
The Enterprise-D is trying to recover a science ship, the Raman, trapped in the atmosphere of a gas giant. In the middle of the work Holt contacts Picard with bad news. The Hera, under Captain Silva La Forge, has vanished with all hands, and a search has turned up nothing.
Picard passes the news to La Forge, who will not accept that his mother is dead. Soon afterwards, while using an experimental probe interface, La Forge sees what looks like his mother aboard the Raman, begging him to take the ship lower. Holt's message hangs over the story and shapes La Forge's refusal to let go.