An apparatus for reducing drag on a moving vehicle includes various combinations of a movable segments and a swing arm. The elastomeric composition can include a fluoroelastomer composition, and the elastomeric composition is substantially free of an epichlorohydrin composition. Finally, a cover, also of high temperature plastic, is injection-molded over the joining parts of the housing, in order to seal it hermetically. The bone plate is movable from a first position to a second position and may have an aperture for lagging the bone plate to the bone. A method of analyzing a video image includes sensing an image; generating an image signal therefor; and computing, on-line, a histogram for the image from the image signal.