| Rating | Solver | Clue |
|---|---|---|
| OBSERVATION | Surveillance | |
| OBSERVATIONPOST | Surveillance position | |
| VIGIL | Period of surveillance | |
| STAKEOUT | Period of surveillance | |
| KEEPSTABSON | Puts under surveillance | |
| CIA | US surveillance org. (1,1,1) | |
| BEADYEYE | Indicator of furtive surveillance | |
| WRISTWATCH | It tells you when it’s time for joint surveillance | |