An interesting PDF slideshow:

http://www.hq.nasa.gov/office/apio/p...erspective.pdf

DoD Space Transportation Perspective

Colonel Jim Knauf
Chief, Space Support & Force Application
Directorate of Space Acquisition
Office of the Undersecretary of the Air Force

NASA Exploration Transportation Strategic Roadmap
Federal Advisory Committee Meeting #1

3-4 February 2005
Orlando, Florida