Which of the following is an example of a CBRN reconnaissance task?

• A. Assess
• B. Detect
• C. Monitor
• D. Record

Answer: (B)

In CBRN reconnaissance, the first action is to determine whether hazardous CBRN agents or indicators are present in the area. This detection step provides the crucial signal that a danger exists and where it’s located, enabling immediate protective actions and guiding subsequent tasks. Assessing would come after you know a hazard exists, to judge its magnitude or risk; monitoring is about watching a known hazard over time, not the initial discovery; recording is simply documenting data. So detecting the presence of a hazard best represents the reconnaissance task in this context.