Ensign Timothy Carstairs works in the science department on the USS Tiger.
Carstairs met with the ship's counselor, Tobias Brel, shortly after Brel arrived aboard. Brel saw through Carstairs' claims that he could not sleep because of his fear that the warp core, located a deck below his quarters, would explode. Carstairs admitted his deception and revealed that having lived in separate quarters when serving on his previous ship, the Galaxy-class USS Lincoln, he was having problems adjusting to sharing quarters.
Carstairs had moved quarters twice before he met with Brel. He currently shares quarters with Crewman 2nd Class Vex Argoff, a Lurian security officer.