Which action is NOT recommended for a security officer if they witness a crime?

Intervening physically without training is not recommended for a security officer witnessing a crime because it poses significant risks to both the officer and others involved. Security officers are trained to observe, assess, and report incidents but not to engage physically unless properly trained to do so. Untrained intervention can escalate a situation, potentially leading to injury or making the situation more dangerous for everyone involved.

In contrast, calling the police, documenting observations, and keeping a safe distance until help arrives are all actions that promote safety and ensure that trained law enforcement professionals handle the situation appropriately. These actions allow the officer to gather necessary information and be a witness without putting themselves or others in harm's way. By adhering to protocols that prioritize safety, security officers contribute effectively to incident management.