Select the "Track Selection" option at the main menu. Select the option for "Walking Wounded". The "Select Audio" menu should appear. Note that below the main audio preferences menu is another sub-menu, with more options. Select the "Supplementary Materials" option from that sub-menu. The "Walking Wounded" screen should appear. Notice that there is a "Behind The Scenes" option in the sub-menu bar near the bottom of the screen. Select the "Behind The Scenes" option to view the featurette.