Donald Trump Jr. said he was fishing with his daughter on Saturday when his fiancée, Kimberly Guilfoyle, called to tell him that his father was shot.
"Kim calls me [and said], 'Your father was shot,'" Trump Jr. recounted during a fireside chat with Axios.
But she had no other information to give, he said.
"It was 90 minutes before I even knew he was alive," Trump Jr. said.
Trump Jr. said then he was able to speak to his father on the phone.
"Considering the heaviness of that moment, sort of gave me a window for some levity and. you know, I asked him, 'Well, most importantly, like, how's the hair?'" he said.
Trump Jr. said his father responded, "The hair is fine ... a lot of blood in it, but it's fine."
"It was a heavy couple of hours, just that unknown," Trump Jr. said. "And then you finally find everything's OK, and then you sit down, and you start seeing the video when you're watching the news. And it was like, the adrenaline dump leaves, you know. Sort of amazing how calm I was first, and then, it's like, once that goes -- 'poof.'"
Trump Jr. said he believes his father is a changed man after the shooting.
"There are events that change you for a couple minutes and there's events that change you permanently," he said.
He also said he believes that there was a breach in security procedures at Saturday's rally.