A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The system further includes a proxy browser, which conducts a browse operation to request the data contained in the master URL. The air-trap chamber protrudes to one side of a second direction intersecting with the vertical direction and the first direction relative to the two outlet ports. The serializer converts the test signals into serial test signals. A field unit may be used in conjunction with the mobile unit and foot unit to determine the location of the foot unit on a playing surface to assist in determining whether an athlete is in or out of bounds, or their location on the playing surface.