The High-Speed Research Program Technology Tracking and Assessment Process is the process by which NASA and its industry partners measures the technical progress of the program's technology development efforts. Metrics are established for each technology area and tracked against end-of-program projections. The process is probabilistic in nature and consists of two phases. The technology audit phase is where the data is gathered and compared to previous assessments. The metrics integration phase is where uncertainties in system-level figures of merit are quantified by using a Monte-Carlo approach to propagate uncertainties at the technology level.