A school bus in Maryland caught on fire on Monday afternoon. And there were 20 elementary school kids on board. It happened in College Park, just outside D.C.

The bus driver was a woman named Reneita Smith, and she immediately started getting the kids off the bus, one-by-one.

Then, even though she thought they were all out, she ran BACK into the burning bus to make sure no one got left behind. And in the end, no one was hurt.

A firefighter’s dash-cam got footage of the fire after they were all safe. And the school bus was fully engulfed, with black smoke pouring out the windows. Reneita said afterward that she has two kids of her own, and never hesitated she felt like it was her job to save them.

It’s still not clear what caused the fire, but the fire department is investigating.Click below to watch this amazing video