Which of the following is NOT a pre-attack cue?

Turning away is not considered a pre-attack cue because it generally signifies a withdrawal or disengagement rather than an intent to escalate a situation. Pre-attack cues are specific behaviors that indicate an individual may be preparing to engage in aggressive or violent actions.

On the other hand, clenched fists, ignoring the officer, and aggressive verbalization are all behaviors that can indicate heightened emotions and potential aggression. Clenched fists could suggest readiness to strike or display aggression, ignoring authority can show defiance or rejection of control, and aggressive verbalization typically involves hostile language that may serve to intimidate or provoke. Collectively, these behaviors are important signals that can alert a park warden to potential threats, enabling them to take appropriate preventive measures.