US Soldiers from the 7th Special Forces Group with Chilean Navy Special Forces training to close quarters combat. The fighting in enclosed spaces, better knon by as close quarters combat (CQC) and close quarters battle (CQB) is a type of combat in which small units face the enemy with personal weapons at very short distance, possibly to the point of reaching the combat or fight with hand weapons like swords or knives . CQC in the typical scenario, attackers attempt violent and very fast assault of a vehicle or structure controlled by the defenders, who usually do not have an easy way to withdraw. Because enemies, hostages / civilians, and co-operation themselves can be closely intertwined, the CQC assault requires rapid and precise application of lethal force. Agents need to have great skill with weapons, but also the ability to make split-second decisions to avoid or limit friendly casualties. The CQC is defined as a conflict of short duration and high intensity, characterized by the sudden violence at close range...