There were very few things Captain Samantha Carter wouldn’t do for her country as a member of Jack O'Neill's Special Ops team. It just so happened that the very thing her superiors were asking of her was one of the few.  ‘Neutralize Jack O’Neill by any means necessary,’ they’d told her. It wasn’t the first order she’d defied but it was the biggest. (Also known as, the increasingly complicated life and times of Samantha Jean Carter, PhD.)

Story I of II complete.

SG1/X-COM Crossover. Not every alternate reality that might be found through the quantum mirror is a worse one for Earth, even the ones where the Goa'uld aren't the only threat and where facing the other invaders a P90 isn't a remotely effective weapon of war.

This is a crossover Fic between two radically different organisations that were set up in the late 1990's to deal with an Extra-Terrestial threat to Earth, only here they exist on the same Earth, fighting two separate wars until their paths converge. In an infinite multiverse there's got to be a world on the other side of the Quantum Mirror which isn't worse for humanity right?