Trump shooting updates: Shooter flew drone 200 yards from site hours before shooting

Butler County Sheriff Michael Slupe spoke with ABC News on Tuesday about the response to the attempted assassination of former President Donald Trump.

When asked whether he heard radio traffic about a suspicious person at or near the rally ahead of the shooting, Slupe said, "I did not, and I wish I did."

Slupe said he attended Saturday’s rally along with a number of his deputies.

He said that his office does not have a team of snipers, but that there is an emergency service unit "attached to" the Butler County District Attorney's Office that is made up of officers from different agencies around the county.

Slupe said he did not know exactly how many of these emergency service officers were on the scene on Saturday.

Slupe defended the response by his deputies and called for the public to avoid passing judgment until the investigations conclude, noting that his office is not facilitating these probes.

"There's several investigations going on, and at the end of the day, we're all going to learn something from this," Slupe said.

-ABC News' Jared Kofsky and Tonya Simpson

The family of James Copenhaver, one of the two men critically injured in the assassination attempt on former President Donald Trump, released a statement Tuesday, thanking the public for their "outpouring of support."

"Jim would like to especially thank the first responders, medics, and hospital staff who have provided him with initial and continuing care," the statement read. "Additionally, Jim would like to express his thoughts and prayers for the other victims, their families, and President Trump. He prays for a safe and speedy recovery for them all."

Copenhaver, 74, of Moon Township, Pennsylvania, "remains in critical but stable condition" as of Tuesday afternoon. He is being treated at Allegheny General Hospital in Pittsburgh.

His family has requested privacy as he recovers.

"The Copenhaver family would like to thank you for your continued thoughts, prayers, and support as Jim and his family recover from this horrible, senseless, and unnecessary act of violence," they said.

House Majority Leader Steve Scalise said he believes Secret Service Director Kim Cheatle should resign.

"I've been very disappointed in her and her lack of candor," Scalise told Politico. "I think the American people need to see whatever the answers are. Tough questions, you got to take the tough questions. You take a position like that … you can’t have a bad day."

Scalise said the Secret Service "should have been out publicly right away" and addressing the press after the shooting.

"You had the local law enforcement giving a press conference, frankly, being asked questions that the head of the Secret Service should have been asked," he said. "And she, you know, kind of was nowhere to be found during that period, and yet they took those tough questions. She's got to answer tough questions. You can't hide from them."

Scalise was shot and wounded at a congressional baseball practice in 2017.

-ABC News’ Mike Pappano

Former President Donald Trump has spoken to a family member of Corey Comperatore, the 50-year-old firefighter who was killed at Saturday’s rally, a source told ABC News.

Comperatore leaves behind a wife and two daughters. His funeral is set for Thursday.

-ABC News’ Rachel Scott