T'rook was a Catian enlisted navigator serving in Starfleet during the 24th century.
By 2370 he was the Leading Chief Petty Officer of Flight Deck Operations Division aboard the USS Thunderchild.
In 2371 he transferred aboard the USS Lionheart as Chief of Flight Operations prior to the ship's initial shakedown cruise. During the subsequent mission to P80-AS he oversaw launch operations for the Yellowjacket and Sarkhova. ("Shakedown Cruise")