HESPERIA (CBSLA.com) — A field trip to the Phelan fire station to learn safety lessons last week may have saved 5-year-old Nathaniel Stocks’ life.

“I don’t think it was a coincidence. I think it was a God thing,” said mom Brianna Stocks.

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Stocks wasn’t home when her son’s room caught fire last Friday night – but his grandma was.

“I think he saved our lives for sure,” Kimberly Ratliff said. “I have no doubt I was sound asleep.”

Nathaniel used a recent fire house lesson to “stop, drop and roll” and then crawled to his grandma’s room.

“Nice thing about Nathaniel he remembers everything,” said Ratliff. “He’s a really smart kid and pays attention.”

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Nathaniel even remembers what his Nanny said when he woke her up.

“She said a bad word,” he recalled.

One look around the home and you too might’ve said a bad word: the place is charred.

In the middle of the family’s burned-up things is something they suspect caused the fire, a space heater.

“My mom said she checked it before he went to bed and we had it on low medium,” said Stocks. “Not sure how it caught really.”

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One thing is for sure – the San Bernardino Fire Department is now calling Nathaniel a hero.