Which of the following is NOT a target area for impact weapon strikes?

The center of the forehead is not considered a target area for impact weapon strikes due to the anatomical structure and protective qualities of that region. The forehead is composed of dense bone, which provides significant resistance against blunt force and can potentially lead to severe injury or death if struck. In defensive tactics, the aim is to neutralize a threat while minimizing the risk of causing excessive harm. Therefore, targeting softer or less protected areas of the body is preferred.

In contrast, the front of the shoulder, inside of the forearm, and top of the calf are areas that are more suitable for impact strikes. These regions have less underlying bone structure compared to the forehead and provide opportunities to disable an assailant without causing fatal injuries. Striking these areas can effectively compromise an adversary's ability to continue their aggressive actions while maintaining a focus on the safety and legalities associated with using force in a defensive context.