The Excelsior Encounters Loka Hask

Captain Sulu took the Excelsior near the Klingon border when the moon Praxis exploded. The explosion opened a temporal vortex in which the Imperial dreadnought Dominator emerged. The commander of the Dominator was Captain Loka Hask. Hask was among the pirate crew that killed Wedge Antilles' parents, Jagged and Zena Antilles, at Gus Treta. While exacting his revenge, Wedge destroyed the left side of Hask's face. Later, Hask imprisoned Wedge, but Wedge managed to escape. Hask and his Imperial forces were swallowed by an artifically created wormhole. A temporal vortex opened which sent Hask and his Imperial forces into the Star Trek universe. This vortex was created when Praxis exploded. The Dominator encountered the Excelsior. The Dominator attacked the Excelsior and a fierce battle ensued. The Excelsior destroyed the Dominator and killed Captain Hask. Sulu reported this incident to Starfleet.