Lockheed Martin says they are ready to begin thermal vacuum testing—“one of the most significant program milestones”—for the first Space-based Infrared System (SBIRS) geosynchronous orbit satellite.
Air Force Secretary Frank Kendall doesn’t see great value in trying to break the Sentinel ICBM program off as a separate budget item the way the Navy has with its ballistic-missile submarine program, saying such a move wouldn’t create any new money for the Air Force to spend on other…