For example, the Pentagon specifies how much money within each segment will be spent on airborne, ground-based, sea-based, or space-based segments, as well as how much will be spent on—broadly—operations and testing. In earlier years (as can be seen in the prior-year columns of the FY 2003 book), every line item was laid out precisely (e.g., "Range Instrumentation, $75 million; Targets Certification, $3 million," etc.). Some details of the program have come out in hearings or press reports. For example, a major part of the Midcourse Defense Segment is R&D work toward rebuilding seven Boeing 747s armed with huge lasers. The Terminal Segment includes money for upgraded Patriot missiles. Many specific programs have gone bust before they've gotten under way. For example, last year, a joint development team—consisting of technicians from TRW, Lockheed-Martin, and Boeing—that had been working on a space-based laser, the heart of Reagan's vision for missile defense, disbanded after a decade of no progress.