>> 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. >> it's all over the place. there's thousands of people helping people all over the city, all over the region. a lot of this is through church groups right here so everybody just comes together. everybody's been through, you know, different events before. and so, people help others that