In my travels around the world (and more so the USA) I have noted that the majority of tactical units within law enforcement do not validate their tactics, techniques and procedures with live fire application (and when I state live fire I am not referring to simunition fx marking cartridges, airsoft or paintball). Now, as a person that grew up in military special forces where live fire validation was an integral part of any TTP we used, I am concerned and perplexed. If you have never validated a TTP through live fire during training how would you ever know that it would work in the real world? Or for that matter how would you know how your operators would/will react?
So...my question to those of you who do not validate TTPs via live fire...why not?