in the past. and we heard blake mccoy reference these white flags that they're putting out on their homes to signal that they need to be rescued. you said we were talking off camera about how this is one of the most important pieces of this response. >> it is. one of the problems is if you don't have a mandatory evacuation or you can't keep track of who was evacuated, you don't know who is still there, and who may need assistance. they may not have access to social media, cell phone or other means to let people know about that. ultimately you need accountability, new orleans we had to do house by house sweep. you remember the icons we put on with spray paint, we had been there and what we found. we won't know until we get in every house who is there and what needs to be done. >> talk a little bit about -- we saw in -- again, we're looking live at people who are evacuating their home right now in port arthur, texas. we saw earlier military chopper coming down, what does it take -- you were the commandant