Thomas Jones was a Starfleet Officer serving in Starfleet during 24th century.
Randy Pflug as Thomas Jones
He served at a variety ofo high profile postings early in his career, inluding the USS Enterprise-D, Deep Space Nine and both Defiant class USS Defiants.
By 2366 he had graduated Starfleet Academy and was serving aboard the USS Enterprise-D.
He was severly wounded during the Invasion of Cardassia abaord the USS Defiant and was transferred to a medical vessel for care.
In2376 he held the rank of Commander and transferred back to the Command Branch when Commodire Nikolas Stone made him the Executive Officer of the USS Defiant's permanent crew.