Brian Cormack was a male Starfleet officer in the late 24th century. As of 2381, he held the rank of lieutenant, and served as chief of security aboard the USS Musgrave. He spoke with a Liverpool accent, which became more pronounced when things aboard ship got interesting. During a mission to the Maxia Zeta system in 2381, he suggested any testing the ship's Starfleet Corps of Engineers crew did regarding farantine be conducted on the shuttlecraft Erickson, rather than risk bringing it aboard the Musgrave. (ST novel: A Singular Destiny)