The Missile Defense Agency has raised the potential value of Raytheon's work improving the X-band sensor portfolio to nearly $1 billion, tacking on a $500 million modification yesterday to a 2017 contract to bolster key Ballistic Missile Defense System radars, including the Sea Based X-Band and the Army/Navy Transportable Radar Surveillance Control Model-2. On Sept. 23, MDA awarded Woburn, MA-based Raytheon Integrated Defense Systems a modification of an indefinite-delivery/indefinite-quantity contract valued at $500.6 million, raising the total ceiling value to...