Which of the following is NOT listed as a common indicator of a potential security threat?

• A. Unusual questions about security
• B. Nervousness or avoidance of eye contact
• C. Smiling and friendly demeanor
• D. Attempts to conceal items

Answer: (C)

Spotting indicators of a potential security threat relies on recognizing behaviors that diverge from normal screening patterns. Unusual questions about security raise curiosity about procedures or intent to probe weaknesses. Nervousness or avoidance of eye contact can reflect anxiety, concealment, or discomfort with the process. Attempts to conceal items directly signal an effort to hide something and are a clear red flag. Smiling and a friendly demeanor, on the other hand, are typical, everyday social interactions and do not by themselves indicate a threat. Because the question asks for what is NOT listed as a common indicator, the friendly, cooperative attitude stands out as not being a risk sign. In practice, assess behavior in context and look for clusters of unusual or incongruent actions rather than a single friendly smile.