Artemis III: A brand-new spacecraft. Artemis IV: A brand-new spacecraft. Artemis V: Will reuse approximately 250 components, primarily life support and avionics equipment, from Artemis II. Artemis VI: Will reuse primary structure (pressure vessel) and secondary structures (gussets, panels, brackets, plates) from Artemis III Orion, and approximately 3,000 components. Lockheed plans to build a fleet...