Combat Comms. Expeditionary Communications Course Published March 25, 2025 By Airman 1st Class Adasha Williams 36th Wing Public Affairs ANDERSEN AIR FORCE BASE, Guam -- 644th Combat Communications Squadron Airmen complete an expeditionary communication course at Northwest Field, Andersen Air Force Base, March 18, 2025. CBCS is a rapid-deployment unit designed to deploy, establish and provide NIPR/SIPR services and Secure/Non-secure voice capabilities.