This invention, as a unit, is a training adjustable combination sight, primarily intended to be mounted on a vehicle of smaller vessel for close-in defence of these against air and ground attacks. The system, method and computer program product are applicable to signal detection circuits, echo cancellation circuits and telecommunications systems. Various geometric configurations are disclosed for advantageous recovery of CO2 and regeneration of the sorbent material. This constraint that only immediate neighbors be used also allows the generation of seamless anisometric surface textures. The assay system may include a fluid controller system to dispense fluid from the one or more fluid chambers, and a user-initiated actuator to control the fluid controller system.