MAI has supported the Submarine Combat System Program Office (PMS 425) in the development of the Tactical Control Sub-System (TCS) of the AN/BYG-1 Submarine Combat Control System (CCS). MAI personnel have extensive operational and technical experience with submarine Combat Control Systems, including involvement in the Advanced Processing Build (APB) Process supporting the development of combat control tactical information algorithms. MAI engaged APB process testing to support PMS 425 in the technical review of APB testing results enabling program concurrence with the technology transition decision. MAI participated in at-sea testing such as Ranging Exercises (RANGEX) and the analyses of exercise data. MAI led shore-based testing of the AN/BYG-1 Unmanned Aerial System.