Next Sbirs Buy Proposed, GEO-1 Launch Readied
By Amy Butler .
![](http://www.aviationweek.com/media/images/defense_images/Satellites/sbirsLOCKHEED.jpg)
The U.S. Air Force is planning to propose the purchase of the fifth and sixth Space-Based Infrared System (Sbirs) early missile warning spacecraft through a new process that calls for the unusual measure of buying two satellites at once.
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