In this Body Armor 101 segment we'll be covering blunt force trauma as it applies to body armor. Blunt force trauma results from the dissipation of kinetic energy when bullets impact body armor. Some types of body armor materials have more flex and can cause a greater degree of blunt force trauma. When you buy body armor, it's important to know worst case scenario what secondary injuries may result when being shot while wearing body armor. Trauma pads can be used to mitigate and reduce the effects of blunt force trauma.