Temporal incursion

Temporal incursion was a term used to refer to alterations in timelines. By the 29th century, agencies such as the Temporal Integrity Commission tasked their temporal agents to protect timeline from these incursions and the changes they caused.

Temporal Cold War
During the Temporal Cold War, numerous incursion happened. Factions such as the Suliban Cabal at the orders of their benefactor, Jamran Harnoth attempted to sabotage the Enterprise ' s. Two other faction, the Sphere Builders manipulated the Xindi into destroying Earth and the Na'kuhl under Vosk allying himself with the Nazis during the Second World War. During these events, temporal agents such as Daniels assisted the Enterprise during the Cold War to protect the timeline.

The Borg
Following the Battle of Sector 001, the Borg travel back to 2063 to prevent First contact between humans and vulcans in order to assimilate Earth in the past. The Borg attempted to kill Dr. Zefram Cochrane and destroy the Phoenix. However, the USS Enterprise (NCC-1701-E) was able to destroy the sphere. The Enterprise crew was then able to help Dr. Cochrane to repair his ship and ensure first contact between Humans and Vulcans.

USS Voyager
During the USS Voyager seven year voyage through the Delta Quadrant, the ship and it's crew were involved in numerous incursions.