| Clue | Source | Date |
|---|---|---|
| Places that are off-limits | New York Times | 20 Jan 2025 |
| Exclusion zones (2-2,5) | ||
| Restricted zones | LA Times Daily | 21 Oct 2022 |
| Forbidden regions | The Washington Post | 08 Oct 2019 |
| Forbidden regions | LA Times Daily | 08 Oct 2019 |
| Restricted zones | Eugene Sheffer | 02 Apr 2019 |
| Forbidden regions | ||
| Military testing grounds and such | New York Times | 19 Nov 2016 |
| Military testing grounds and such | ||
| They're off-limits | ||
| Access to them is restricted | ||
| Restricted zones |