Stargate Command

Stargate Command (abbreviated to SGC) is a top-secret military organization founded and led by the United States Air Force in conjunction with the International Oversight Advisory, tasked with operating the Stargate device and all matters pertaining to things offworld, such as threats to Earth or missions to procure new technology from extraterrestrial civilizations. It is based inside the Cheyenne Mountain Complex in Colorado, code named "Area 52".

The SGC is located one thousand meters beneath Cheyenne Mountain. This protects it from most forms of attack, including indirect nuclear detonations, and allows containment of biological or chemical hazards generated by Gate travel (the base may be 'locked down'). However, it was shown in an alternate reality to be unable to withstand a direct Goa'uld attack.

The primary function of the base is to secure the Stargate (by locking it under 1000 meters of rock inside a secure military base) and protect the Earth. Simultaneously, it exists to coordinate exploration and diplomatic relationships through the Stargate; i.e. it is the core of the Stargate Program, the mission of which is to procure technology that can defend Earth, and make offworld allies.

The SGC serves as one location for researching alien technology with larger or longer term research projects being conducted at Area 51 off-site in Nevada. On more than one occasion, SGC personnel have had to recapture alien technology that has escaped into the outside world. Many cover stories have been generated to keep the general populace, even high-ranking government officials, unaware of the goings-on within the SGC.

Official Stargate Command Website[stargatecommand.co]
Stargate Command YouTube