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English: USA 193, also known as NRO launch 21 (NROL-21 or simply L-21) is a National Reconnaissance Office satellite. It was launched from Vandenberg Air Force Base Space Launch Complex 2-West.
This category has only the following subcategory.
- [×] Delta 322 (5 F)
Media in category "NROL-21"
The following 8 files are in this category, out of 8 total.