Which definition correctly describes surveillance?

• A. Systematic observation of areas, places, or persons by visual, aural, electronic, or other means
• B. Mission to obtain information about the adversary by visual observation or detection methods
• C. An intelligence product resulting from collection, processing, integration, analysis and interpretation
• D. A plan to defeat the adversary's systems

Answer: (A)

Surveillance is ongoing, systematic observation of areas, places, or persons using visual, auditory, electronic, or other means. It emphasizes watching over time and maintaining situational awareness, rather than pursuing a single information-gathering mission or producing a finished intelligence product. This is why the description focusing on continuous, multi‑modal observation best fits surveillance.

In contrast, a mission to obtain information describes a directed activity aimed at gathering data at a specific time or place, which aligns more with reconnaissance. An intelligence product is the result of processing and interpreting collected data, not the act of observing itself. A plan to defeat an adversary’s systems is a course of action, not an observational activity.