CQC-Close Quarters Combat
I really have never experienced close quarters combat for myself besides using a group of neighborhood yards for an airsoft skirmish or too. To my knowledge, CQC is almost like scenario S.W.A.T. in which two teams or groups fight in stressing and suspenseful urban and household environments with no forest cover, but doors and walls. The games can be much more challenging and tactic requiring than regular airsoft. There are many CQC competitions around the U.S. such as possibly the largest event, Pacific Airsoft CQC Competition.
