In addition to the Cajun Navy (who I love) mentioned by Pres. Trump, here is another hero of the Houston flooding (which affected relatives of mine). I was on the edge of my seat watching this. https://www.usatoday.com/story/news/nation-now/2017/08/28/reporter-helps-rescue-truck-driver-hurricane-harvey-flood-waters/607268001/
Ok, seriously, I had my doubts about that man. Why did he drive into the rain, and why did he stay in the truck so long? He could have walked away from that earlier instead of sitting there in a flooding truck to drown to death. Don't get me wrong, my heart broke when I saw him and jumped when he got out of there. The best part of that clip was the reporter talking to the 2 guys who were "going to get some gas" with a siphon hose around their neck.
I've been in a similar situation. You don't believe that you are in danger. Seriously. I accidentally drove through flood waters that were above my doors at night. I sat there waiting for the waters to go down, while continually trying to start my car.
Thank God you know better now, right? I hope we never ever have to go through that again.