Austin Seth is one of thousands of people who have helped rescue people from the flooding in Houston, Texas. He tells John Campbell he's never seen anything like this before.
To embed this content on your own webpage, cut and paste the following:
<iframe src="https://www.radionz.co.nz/audio/remote-player?id=201856552" width="100%" frameborder="0" height="62px"></iframe>
for easy access to all your favourite programmes