Nicksfriend
Police Officer
I think it is a regular officer that is down and not a CSI. I think the preview they just do it to make you think it is a regular one. And it is Greg's voice who yells that.
It's Officer Aker who is down and in one scene Grissom tells Gregg that if they wanted to send a bigger message they could have....so officer Aker is down but not out (Aker was also in For Gedda and several other episodes)....Nick tries to talk to the woman but she does not speak English but the little boy is there and he translates that they are there to help, not hurt. The little boy ends up saving Nick from pistol toting grandma!