Marine Corps Air Ground Combat Center is located in San Bernardino County in Southern California. MCGACC covers more than 998 square miles of the high desert, which makes it larger than some small countries. The premier training facility is nestled in the quiet desert paradise of Twentynine Palms, and together, makes up one of the most unique living environments in the western United States.

MCAGCC's two-fold mission is to operate live fire combined arms training that promotes readiness of operating forces and to provide facilities, services, and support, responsive to the needs of tenant commands, Marines, Sailors and their families.