An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The feeder includes a frame having a base extending in a longitudinal direction between a forward end and a rearward end and which supports the feeder on an underlying surface. By using enemy force movement predictions for an initial comparison, the enemy force movements may only need to be compared to the own force mission plan if the enemy forces deviate from the predictions. The linear motion simultaneously affects exhausting of low-pressure fluid at the other end of the piston. , information that indicates that selected buffered data corresponds to deleted file data. It also relates to a device for performing the method according to the present invention.