John Eaves was a Starfleet officer in the 23rd century and 24th century. In 2293, he was listed as a Engineering Division officer on the dedication plaque of the USS Enterprise-B. (Star Trek Generations, dedication plaque) In 2372, he was listed as a Spaceframe Development officer on the dedication plaque of the USS Enterprise-E. (Star Trek: First Contact, dedication plaque) Later that year, he was listed as a Science Ops officer on the dedication plaque of the USS Valiant. (DS9: "Valiant", dedication plaque)