Lieutenant Kulessa was a 23rd century Starfleet officer, assigned to the crew of the Federation starship USS Enterprise in the 2260s. In 2266, Kulessa accompanied a fifteen-man survey team to Tlaoli IV. (TOS - The Janus Gate novel: Present Tense) A full lieutenant's insignia is shown for the purposes of this wiki, but it is also possible that Kulessa was a lieutenant junior grade who was referred to in conversation as "lieutenant".