Minnesota Gov. Tim Walz argued for stronger gun control laws at Tuesday’s vice presidential debate, noting that both he and his running mate, Vice President Kamala Harris, are gun owners.

Walz said the nation needs to do more to protect school children, arguing in favor of both greater gun control, as well as more research into gun violence.

WATCH: 9 takeaways from the Vance-Walz VP debate

“I ask all of you out there: Do you want your schools hardened to look like a fort?” Walz said, adding that there are children in other countries who aren’t practicing school shooter drills.

“They’re being kids. We owe it to them to get a fix,” he said.

Walz also recounted how his 17-year-old son witnessed a shooting at a community center while playing volleyball.

“Those things don’t leave you,” Walz said.

With just more than a month to go before Election Day, Ohio Sen. JD Vance and Walz met for their first and only vice presidential debate on Oct. 1, hosted by CBS in New York.