English: The Semi Automatic Ground Environment — a computerized military defense system designed by the United States during the Cold War to facilitate the interception of Soviet Union bombers.
- Part of the NORAD—North American Aerospace Defense Command.
This category has only the following subcategory.
- ► SAGE sites (2 C, 4 F)
Media in category "Semi Automatic Ground Environment"
The following 8 files are in this category, out of 8 total.