A system and method of supplying temperature-controlled air to an aircraft environmental control system during ground support operations that uses a bypass valve in a bypass line to control the amount of cooling air flowing through a heat exchanger. The water soluble resin is contained more in a surface portion or surface portions of a fiber assembly than in a remaining portion or inner portion of the fiber assembly. In a second operating mode, a frequency generator is supplied with a signal that is dependent on the modulation signal and is just amplified in the frequency mixer. The safety shield further includes a trigger supported on the foot member. The method involves identifying a user preference, providing at least one data feed containing information related to the user preference, selecting preferred data from the data feed corresponding to the user preference, pre-loading information that matches the preferred data from the host server to the display device, and presenting the preferred data through the display device.