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>> reporter: you're a hero to a lot of people. you know that. >> no. it's what we do. it's what we do. >> reporter: how long have you been at it? >> oh, just a few hours. we've been protecting our home, you know, up to this point. so, now that the water's up, it's time to get out and help. >> reporter: ray, what runs through your mind when you see the cats rescued, the children rescued, these people and the look on their faces when you show up. >> real happy. very happy. proud to be a texan. >> reporter: i've observe add l -- observed a lot of this selflessness from houstonian. describe that. ...

>> perry, does anybody go off script? once the speech is approved, do you worry if sarah palin or herman cain decides to add l li bit? >> donald trump goes off speech. herman cain would stay on message. santorum has been on message since he endorsed romney. you want to avoid the trump -- palin is dangerous in terms of staying on message. >> is it going to be chris christie with the keynote? >> i think he would not be a bad choice. when it comes to the number one issue of romney's campaign is the economy. chris christie has proved an effective messenger on that. that part of the equation could ...