Abstract: An access control system is provided for controlling access to an area secured by perimeter protection defining a secure perimeter. The access control system comprises a portable container configured to be stored, transported and installed repeatedly as a closed container. The portable container is further configured to be operated repeatedly as an open container and closed container with a permanent barrier section constituted by the portable container and configured to secure a perimeter. At least one operational barrier section is configured to be operational in an open state to allow access through the secure perimeter and in a closed state to block access through the secure perimeter. The operational barrier section is configured to be fully contained within the closed container when not installed and is also configured to operate outside of the portable container in either open or closed state and to change between open and closed state.