Lahnk was the 'requisitions officer' for the Thermian crew. His main speaking part was during the initial limousine ride (after picking up 'Captain Taggart' to take him to the Protector). After he introduced himself and told Taggart/Nesmith (Tim Allen) to let him know if he needed anything, Nesmith asked for a Coke, and Lahnk (after being signaled by Mathesar where to find it) pulls one out of a compartment beside the seat and gives it to him.