Lyran Starfleet Security was the division of Lyran Starfleet tasked with maintaining security. Lyran security officers were called Stormtroopers or brownshirts. (RIS Bouteina: "The Measure of a Romulan") Lyran Starfleet Security operated the Imperial Stormtrooper Marksmanship Academy in order to train stormtroopers. During the Dominion War, according to Cardassian accounts, Lyran Starfleet Security was said to be ineffectual due to their ineptia at shooting, but by the 2410s, stormtrooper training had improved. (Star Trek: False Vacuum: "Asteroid Dusting")