 This laid the foundation for what is now known as the Marine Air Command and Control System (MACCS).Testing and fielding of MTDS along with various other automated systems in the 1960s highlighted that the Marine Corps was not properly staffed to develop, test and acquire new digital equipment.Lessons learned from MTDS's testing and development and the recognized need to support current and future tactical data systems led to the development of the Marine Corps Tactical Systems Support Activity (MCTSSA) based at MCB Camp Pendleton, CA.