A directly cooled diode-laser bar package includes a diode-laser bar bonded to a heat-sink. The butterfly valve can be swivelled using a drive shaft. A user may log into the subscription server and subscribe to receive a specific set of metric data from a variety of the metric publication providers. Due to its materials and construction, the wheelchair of the present invention also allows for a solid non-sling seat, is pilferage resistant, and provides multiple surfaces upon which indicia, such as corporate graphics, may appear.