ser vay luhns
- n close observation of a person or group (usually by the police)
- But to be sure, they needed a plane that could stay aloft over the ocean, undetected, long enough to get detailed surveillance imaging.
- Technicians stand next to a Heron drone to be used in a surveillance demonstration related to El Salvador's anti-drug operations, at the second military air base in Comalapa, on .
- The Obama administration promised Congress to negotiate stronger privacy protections for Americans under terrorism surveillance but insisted on retaining current authority to .