of the enclosure when the agitation device is then deflated one or more foam pieces that were previously near the sides of the enclosure may be repositioned closer to the center of the enclosure the rotation of the relative positions of the foam pieces within the enclosure may facilitate decompression fig9 illustrates another example of a multi stage agitation device e g top view in the example illustrated in fig9 blower 902 may be operably connected to first stage 904 first stage 904 may be an inflatable bladder and or section of an inflatable bladder that lines and or is adjacent to one or more edges of the enclosure upon applying compressed air via blower 902 first stage 904 may become inflated first stage 904 may be vaulted and or may have flat sides second stage 906 may be inflated after first stage 904 for example junction 908 may be designed to allow little or no air to enter second stage 906 until first stage 904 has been inflated or nearly inflated for example one or more valves may be include in junction 908 to prevent the air from entering second section 906 until first section 904 has reached or exceed a given volume and or pressure in another example junction 908 may be a baffle or opening that is designed to limit the amount of air that passes to second stage 906 so although some air may enter second stage 906 while first.