Lieutenant Matthew Barnes was a male Starfleet engineer who served aboard the USS Enterprise-E. In 2379 he was part of the Alpha team under the command of Commander William T. Riker which was sent to Tezwa's Mokana Basin to destroy the nadion-pulse cannon firebase located there. He was injured by a swamp monster and lost his backpack containing his demolition kit, but Alpha team was still able to destroy the firebase. After helping to set the charges leading to the destruction of the base, he was shot and killed by a sniper. His body was later recovered by Enterprise personnel. (TNG novel: A Time to Kill)