HQS
| Date | Clue |
|---|---|
| 2025-02-25 | Command ctrs. |
| 2024-02-28 | Command centers, for short |
| 2018-02-18 | Central command spots, for short |
| 2013-07-06 | C.E.O.'s places |
| 2012-03-27 | Command posts, for short |
| 2011-02-21 | Mil. command centers |
| 2011-01-07 | Command ctrs. |
| 2008-08-10 | Command ctrs. |
| 2008-06-12 | Command centers: Abbr. |
| 2007-08-13 | Mil. command bases |
| 2007-06-16 | Administration ctrs. |
| 2003-11-09 | C.O.'s hangouts |
| 2000-12-13 | Command posts: Abbr. |
| 1996-03-19 | Mil. command centers |