The DoD has had long-standing difficulties developing and delivering space systems on time and within budget. Attempts to reform DoD space acquisitions in the past have sought to leverage commercial approaches or rely more on the commercial sector to meet DoD needs. This report examined the following questions: (1) What are the differences between commercial and national security space system missions, requirements, and technology development? (2) What acquisition practices adopted by commercial co¿s. could be used for national security space system acquisitions? (3) Which acquisition practices adopted by commercial co¿s. may not be readily adaptable for national security space system acquisitions? Charts and tables.

The DoD plans to invest $109 billion in its tactical air forces (TAF) between 2007 & 2013. Long term, DoD plans to replace aging legacy aircraft with fewer, more expensive but more capable & stealthy aircraft. Recapitalizing & modernizing TAF within today¿s constrained budget environment is a formidable challenge. DoD has already incurred substantial cost & schedule overruns in its acquisition of new systems, & further delays could require billions of dollars in additional investment to keep legacy aircraft capable & sustainable. This report describes the current status of DoD¿s new TAF acquisition programs; identifies current impacts on legacy aircraft modernization programs & retirement schedules; & assesses DoD¿s overall investment plan for TAF. Illustrations.