USS Challenger

The USS Challenger (NCC-71099) was a Galaxy-class starship launched sometime prior to 2377. The Challenger was one of the starships which intercepted the Borg sphere which carried the USS Voyager back to the Alpha Quadrant in 2378. (VOY: "Endgame") In an alternate timeline created after the USS Voyager's attempt to use quantum slipstream drive resulted in the ship being destroyed, the Challenger was captained by Geordi La Forge in 2390. The vessel was assigned to pursue and capture the Delta Flyer, which had been stolen by former Voyager crew members Chakotay and Harry Kim. The Challenger managed to inflict severe damage on the Flyer, causing a warp core breach. However, Harry Kim was successful in transmitting a message to Voyager into the past, giving them instructions to collapse the slipstream and avert the disaster.