From Stargate Wiki
- "We were in a battle with Wraith cruisers. They proved too much for us so we started back to Atlantis only to be told that the final evacuation was already in progress. I decided to push on to Earth and join the evacuees. Even when our hyperdrive failed we decided to continue on."
- — Helia
- "They were battle-scarred and already well on their way to Earth when their hyperdrive finally gave out on them. They decided it was best to continue forward than go back."
- — Elizabeth Weir
Near the end of the war, the Tria was in a battle with wraith cruisers which proved too much for the ship and they retreated. While on their way back to Atlantis they were told of the evacuation and the Captain Helia decided to push onward back to Earth using their ships hyperdrive. However the hyperdrive failed on route and they were forced to modify their sublight engines to accelerate the ship at 99.9% light speed.
Due to relativistic effects, the crew experienced only a few years when in fact 10,000 had passed. The Tria suddenly detected a ship, the Daedalus, in its vicinity with hyperspace capabilities and began deceleration manoeuvres. Helia sent a holographic communication to the ship asking for assistance in the form of hyperspace travel.
The Daedalus offered their assistance and transported the entire crew back to Atlantis, where they took control of the city and asked the expedition to leave. (ATL: "The Return, Part 1") Today the Tria sits dormant between the Milky Way and Pegasus. 
The Tria was manned by over a hundred Lanteans.
- Captain Helia