| Answer | Crossword Clue |
|---|---|
| NSA | Ultra-secret org. |
| NSA | Ultra-secretive org. |
| NSA | Secret org. |
| CIA | Secret org. |
| NSA | Top-secret org. |
| NSA | Top secret org. |
| IRA | Secret nationalist org. |
| NSA | Super-secret org. |
| NSA | Super-secret intelligence org. |
| NSA | Super-secret government org. |
| NSA | Top-secret intelligence org. |
| NSA | Top-secret govt. org. |
| NKGB | 1940s Soviet secret police org. |
| OGPU | Old Russian secret-police org. |
| NKGB | 1940's Soviet secret police org. |
| OGPU | Old Soviet secret police org. |
| NSA | Top-secret U.S. org. |
| MGB | Org. that functioned as the USSR's secret police from 1946 to 1953 |
