Vice President Kamala Harris and her running mate, Minnesota Gov. Tim Walz, sat down Thursday for the first major television interview of their presidential campaign with CNN’s Dana Bash as the duo travels in southeast Georgia on a bus tour.

Bash asked Walz about several misstatements of fact in his record, starting with how he has described his 24 years of service in the National Guard.

In a 2018 video clip that the Harris-Walz campaign once circulated, Walz spoke out about against gun violence and said, “We can make sure that those weapons of war, that I carried in war, is the only place where those weapons are at.”

Critics say Walz portrayed himself as someone who spent time in a combat zone. But a campaign spokesperson said he misspoke.

Walz replied that he was “incredibly proud” of his National Guard service.

“My record speaks for itself, but I think people are coming to get to know me. I speak like they do. I speak candidly, I wear my emotions on my sleeves, and I speak especially passionately about our children being shot in schools … I think people know me. They know who I am. They know where my heart is.”

Walz said his wife, who was an English teacher, tells him that his “grammar is not always correct.”

“One thing I’ll never do is, I’ll never demean another member’s service in any way. I never have. And I never will,” Walz said.

Asked about statements that appeared to indicate that he and his wife conceived their children with in vitro fertilization when they in fact used a less controversial fertility treatment, he said he believes most Americans get that it’s the Trump campaign that’s splitting hairs.

But Walz did not address Bash’s question about false statements that his staffers made in his first congressional campaign in 2006 about his arrest for drunken driving in 1995. The staffers denied that he was driving drunk, but a transcript of his court appearances shows that he and his attorney acknowledged that he was.