(SAGE) The computer system of the old US Norad aIR defence system. SAGE was ground-breaking in many ways, such as being one of the fIRst very large software projects and the fIRst real-time system. MIT Lincoln Laboratory developed SAGE and {MITRE Corporation} was responsible for system engineering and implementation oversight. , , . [ConfIRm? Dates? Connection with MIT Research Laboratory for Electronics?] (1999-12-16)