During a listening session Wednesday, President Donald Trump told a group of parents and students that arming teachers may be the answer to preventing future school massacres.

Trump held the listening session at the White House, taking the opportunity to hear directly from students, parents and other community members following the events of last week’s school shooting in Parkland, Florida.

During the event, he asked for feedback from those gathered, and thoughts about solutions for the types of massacres that have occurred in schools across the nation.

One of the ideas brought up was concealed gun carriers – or persons who were licensed and trained to respond to violent attacks – who would be present on campus but would not necessarily be identifiable.

“A gun-free zone to a maniac,” Trump said, “Is ‘Let’s go in, and lets attack because bullets aren’t coming back at us.’”

He continued: “It’s certainly a point that we will discuss, concealed carry for teachers and for people of that type of talent, let’s say we had 20 percent of your teaching force because that’s pretty much the number.”

He said it takes a relatively long time for authorities to respond to these shooting incidents.

“You can’t have 100 security guards in Stoneman Douglas [High School],” He said, suggesting that people already at the school, and who were adept and trained, would be able to respond quicker.

“You’d have a lot of people who would be armed, who would be ready,” Trump said. “They may be Marines that left the Marines, left the Army, left the Air Force, and they are very adept at doing that. You’d have a lot of them and they would be spread evenly throughout the school.”

“If these cowards knew” that teachers were armed, Trump continued, “I don’t think they would go into the school to start with, I think it could very well solve the problem.”

The Washington Examiner notes: Trump also spoke of tightening background checks, rethinking age requirements to buy certain weapons, and bringing back insane asylums. He polled the room of survivors and the relatives of victims and acknowledged mixed views on arming teachers.

You may hear the president’s comments in the video below.