GEO Group corrections officer Brandon Booth did not have a concealed-carry license for the gun he used to shoot a protester in the foot outside an Aurora detention facility and he does not have formal weapons training, he told investigators.

Booth shot 21-year-old Emma Landis on Thursday after Landis and a friend yelled at him and other GEO employees outside of the U.S. Immigration and Customs Enforcement processing center at 3130 Oakland St. in Aurora.

After the shooting, Booth told investigators that he meant to scare them, not hit them, and realized he had “done some dumb (expletive)” when he saw the protesters recording on their cellphones.

Landis called 911 at about 7:30 p.m. Thursday, telling dispatchers she had been shot and could not feel her foot, according to Booth’s arrest affidavit.

She and her friend, 38-year-old Mandy Dillon, were protesting outside the detention facility prior to the shooting and left to take a call.

As they left, they approached Booth and other GEO employees waiting to go to work and started yelling “derogatory terms” at them, calling them “race traitors” and “Nazis,” the affidavit said.

Booth then drew his personal gun and shot Landis in her right foot. He got into his car and left.

SWAT officers arrested Booth and booked him on suspicion of attempted second-degree murder, first-degree assault, attempted first-degree assault, felony menacing and unlawful carrying of a concealed weapon.

Landis was assisted at the scene and transported to a local hospital, where she is recovering, according to a GoFundMe page created to help her with medical bills and legal fees.

Booth has been employed as a corrections officer at the GEO facility for about three years and his criminal record shows charges of driving under the influence, driving under suspension and two protection orders.

He told officers that the two protesters threatened to “run you down” and “have people at your kids’ school.” The threats “caused his anger level to reach a 15 out of 10,” he told investigators.

In cellphone footage from Landis and Dillon, the two are heard making statements about license plates and being able to find out where the GEO employees live and what school their kids go to, but no statements of threats were heard in the footage.

Aurora Police Chief Todd Chamberlain called the incident a “tragedy on all fronts.”

“We remain committed to ensuring an ethical, thorough, objective and comprehensive review of this case,” Chamberlain said in a news release. “Violence of any kind will not be tolerated in Aurora. Constitutional rights are a pivotal part of a just society — violence is not.”

A GEO Group spokesperson said the company is aware of the incident and placed Booth on unpaid administrative leave. GEO will fully cooperate with law enforcement, the spokesperson said.

In a statement on Friday, the ACLU of Colorado said it is “furious” about the shooting.

“Not only are immigrant communities being terrorized by U.S. Immigration and Customs Enforcement and federal agents, now protesters who are exercising their First Amendment right must also fear violence by people employed as U.S. Immigration and Customs Enforcement contractors,” ACLU of Colorado Executive Director Olivia Mendoza said in the statement. “U.S. Immigration and Customs Enforcement and its employees are out of control and must face accountability.”