A system for managing energy consumption by equipment located at a site or a plurality of sites. The detection apparatus is provided on a bumper of the vehicle, and comprises a coil as well as electrode lines to serve as the electrodes of a capacitor for detecting a human body. A reference shift register receives reference data and loads and circulates the reference data. A gap between the rollers is provided to allow clearance for the device as it is utilized. In an embodiment, the facial cavity is further provided with one or more segmented edges that can be removed to further shape the facial cavity to the contours of the patient’s face. The wall has an opening to allow passage of a projectile fired from the firearm.