S.G.A.
From The Stargate Omnipedia
"Stargate Association," the designation for Stargate Command in a number of parallel realities.
See also: S.G.C.
KEY EPISODES
There But For the Grace of God - Daniel travels to a parallel Earth, where the S.G.A. is the only line of defense against Apophis's attack ship.
Point of View - Majors Carter and Kawalsky arrive from another universe, and must convince Earth's leaders that they are part of the S.G.A.