Multiple independently gimbaled devices, such as an electro-optical sensor and machine gun, are mounted to a rotating platform on a vehicle. The platform can rotate to prevent one device from blocking the other while aiming at an off-board location. A control system can harmonize the rotation of the device gimbals and rotating platform so that they remain pointed at the same location. The platform can be rotated to place a firing weapon downwind of a sensor or otherwise compensate for effects of one on the other.