9.1 Problem Introduction9.2 Definition Phase9.2.1 Operational Context, Status Quo, and Barriers9.2.2 Scope Categories and Levels9.2.2.1 Example 1: Robust, Scalable Transportation System Concept9.2.2.2 Example 2: Assessing New Technologies on Future Fleet and Emissions9.2.2.3 Example 3: Air Transportation Network Restructuring9.3 Abstraction Phase9.3.1 Resources, Stakeholders, and Networks9.3.2 Drivers and Disruptors9.3.2.1 Example 1: Robust, Scalable Transportation System Concept9.3.2.2 Example 2: Assessing New Technologies on Future Fleet and Emissions9.3.2.3 Example 3: Air Transportation Network Restructuring9.4 Implementation Phase9.4.1 Example 1: Robust, Scalable Transportation System Concept9.4.2 Example 2: Assessing New Technologies on Future Fleet and Emissions9.4.3 Example 3: Air Transportation Network Restructuring