Trump shooting updates: Shooter flew drone near site hours before shooting

A day after being grazed by a bullet in an attempted assassination, former president Donald Trump said he plans to take advantage of the moment and deliver a message of unity to meet the moment.

"The speech I was going to give on Thursday was going to be a humdinger," Trump said as he boarded his flight en route to the Republican National Convention in Milwaukee. "Honestly, it’s going to be a whole different speech now."

"It is a chance to bring the country together. I was given that chance," Trump added.

He said that many people from the political spectrum have called him over the past 24 hours and described the moment he turned his head on stage to look at the screen, which ultimately could have saved his life.

"That reality is just setting in," Trump said. "I rarely look away from the crowd. Had I not done that in that moment, well, we would not be talking today, would we?"

The world has now seen the image of the former president raising his fist with blood on his ear, and Trump said he did that because he wanted the country to know he was going to be OK. He wanted the Pennsylvania crowd to know that "America goes on, we go forward, that we are strong."

Trump recalled, "The energy coming from the people there in that moment, they just stood there; it’s hard to describe what that felt like, but I knew the world was looking. I knew that history would judge this, and I knew I had to let them know we are OK."

-ABC News’ Kelsey Walsh

Former President Donald Trump underwent a precautionary CT scan after he was shot on the upper ear during his campaign event Saturday, sources told ABC News.

The scan came back clear, sources said.

Trump is in Milwaukee Sunday ahead of the Republican National Convention that begins Monday.

-ABC News' Aaron Katersky

Rep. Ronny Jackson of Texas, who says his nephew was injured while in the crowd during Trump’s Saturday rally, told ABC News Trump is "completely unfazed" by the assassination attempt.

"He's normal Trump," Jackson said in Milwaukee Sunday night, adding that the former president is "really motivated and fired up" after the shooting.

Jackson also said Trump was feeling good about being in Milwaukee for the Republican National Convention.

"He could have not come today based on what happened yesterday, but he wants to make sure that we stick to the schedule. He committed to some stuff today, and he's here," he said.

The man suspected of taking aim at former President Donald Trump Saturday night was a member of a local shooting club, counsel for the club confirms to ABC News.

Thomas Crooks belonged to Clairton Sportsmen's Club, in Clairton, Pennsylvania, roughly 12 miles south of Pittsburgh, which has a variety of shooting ranges.

"I can confirm that Mr. Crooks was a member of Clairton Sportsmen's Club," Robert S. Bootay III, attorney for the club, said in a statement.

"Beyond that, the Club is unable to make any additional commentary in relation to this matter in light of pending law enforcement investigations," Bootay continued.

"Obviously, the Club fully admonishes the senseless act of violence that occurred yesterday. The Club also offers its sincerest condolences to the Comperatore family and extends prayers to all of those injured including the former President," he said.

-ABC News' Sasha Pezenik