Something that needs to be thought about
Here is something from Grossman
There are those who train that say you should yell commands before you fire. Now is this that Grossman is speaking of happen and you have trained to speak first. Now you can not speak will you fire?
Unless you have been properly trained, it is quite easy for you to experience a profound breakdown of speaking ability, and in Condition Black you may literally be scared speechless when operating at extreme levels of stress. Lt. Col. Dave Grossman
I don't know the answer, but I train to react not to talk.