618 Air Communications Squadron AMC (U.S. Air Force) The 618 Air Communications Squadron (618 ACS) is an operational unit within the United States Air Force's Air Mobility Command (AMC). Its primary role involves providing secure and reliable communications infrastructure for air, ground, space, and cyber operations in support of the U.S. military and its allies. The squadron is stationed at Travis Air Force Base, California. The 618 ACS ensures the seamless flow of data, voice, and video communications among various platforms and networks, both nationally and internationally. This includes maintaining satellite, line-of-sight, and radio systems for air traffic control, command and control, and tactical operations. The squadron's work is crucial in ensuring the effective coordination and execution of U.S. Air Force missions worldwide. The 618 ACS is a part of a larger global communications network under the auspices of the Air Mobility Command. Its duties are integral to maintaining the operational readiness and strategic flexibility of the United States Air Force in its mission to protect the nation and project air power around the world.