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Season 1 - Sep. 26, 2001
Season 2 - Sep. 06, 2003
Season 3 - Nov. 28, 2004
Season 4 - Oct. 08, 2004

Star Trek: Enterprise Season 2 Episode 26
HD
Overview:
An alien race known as the Xindi launch an attack on Earth, causing great casualties and massive damage. As Enterprise heads back home, an unlikely source informs Archer about the Xindi and that their next attack will destroy Earth.