Boeing has received a $148 million contract from the U.S. Air Force to begin work on the fourth satellite in the Wideband Gapfiller Satellite system, Boeing announced Feb. 20.

Boeing already is under contract to build the first three satellites for the system, and the Air Force authorized Boeing to begin engineering and procurement of parts for the fourth spacecraft. The first Wideband Gapfiller satellite is scheduled for launch in June 2007.