Tortis was a lawyer and software technician posted on the USS Antechrist. In an emergency, he could pilot a fighter; when he did so, he became known by the callsign "Lawsuit", due to his law degree from Cogley Law School.
He was also part of the away mission that attempted to determine the causes of the subspace communications jamming two parsecs from Thuban. There, he flew his first mission as a fighter pilot. (Star Trek: False Vacuum: "Structural Unemployment")