condolences to you and everyone in arizona on this devastating tragedy. >> thank you, it is very much appreciat appreciated. i'm sure from everyone that's watching, but certainly from everybody in arizona. we've had a terrible, terrible tragic day in arizona. it's painful. >> these men were some of the bravest firefighters and most highlight trained in america. do you know yet what happened here to cause such a ka lamb itous loss of life? >> we don't actually know, there's going to be an intense investigation taking place, we assume the fire burned up, and then because of the thunderstorms and the wind, it turned on them, and then there was no way for them to leave the area in which they were in. in other words, their exit area was now on fire, so there was nowhere for them to go, they sheltered down, putting the shelter over them, and holding it down with their hands and