Jhunjhunwala R, et al. – Researchers planned this study to evaluate the adequacy of the anatomic borders of the current “cardiac box” to predict cardiac injury. To discriminate whether a gunshot wound (GSW) would cause a cardiac injury, the current cardiac box was inadequate for GSWs. Entrance wounds nearest to the heart were the most likely to result in cardiac injury as expected. However, it was best to think outside the “box” for GSWs to the thorax from a clinical standpoint.