| Clue | Source | Date |
|---|---|---|
| Sign of semi-consciousness, maybe | ||
| Sign of alertness | The Washington Post | 03 Feb 2019 |
| Sign of alertness | LA Times Daily | 03 Feb 2019 |
| Sign of alertness | ||
| Indicator of vigilance | ||
| Symbol of watchfulness, as found on the Great Seal | ||
| Sign of watchfulness |