4. Reference Mission Development
   4.1. Mission Design - First Flight
   4.2. Spacecraft Design
   4.3. Systems Design
   4.4. Spacecraft Production
   4.5. Ground Support
   4.6. Flight Crew
      4.6.1. Flight Crew Requirements
      4.6.2. Flight Crew Training
   4.7. Mission Operations
   4.10. Design Requirements and Specifications