The Air Force has awarded a $143.7 million contract to TRW to begin replacing the guidance systems on the service's most advanced land-based intercontinental ballistic missile fleet, TRW announced yesterday. TRW, the prime integration contractor for the nation's ICBM force, will oversee the extension of the service life of the Minuteman III ICBMs' guidance systems beyond 2020. "The (Guidance Replacement Program) modernizes the guidance system electronics, as well as provides new guidance system software," the TRW statement said. "Replacement of...