Which of the following is not required equipment for Security Forces (SF) personnel?

The selection of "commercial radio" as not being required equipment for Security Forces personnel is correct because it highlights the distinction between essential operational equipment and items that may be useful but are not mandated.

Security Forces typically need gear that directly supports their mission of protection and law enforcement. Body armor offers vital protection in potentially hazardous situations, while handcuffs are key for detaining individuals when necessary. A flashlight is also essential, as it enables proper visibility in low-light conditions, contributing to the safety and effectiveness of SF personnel during their duties.

In contrast, a commercial radio, while it can enhance communication, is not a standard mandatory item for all Security Forces members. The requirement for communication equipment may vary or depend on specific mission parameters, situations, or different sectors within security operations. As such, it does not hold the same level of necessity as the other items listed.