The former director of the “Call of Duty” video game franchise suggested stationing soldiers in U.S. schools.

“The threat now, the invasion, comes from within,” said Dave Anthony, the former video game developer and a current international security fellow at the Atlantic Council.

Anthony made the remarks Wednesday at the nonpartisan Washington think tank, arguing that military personnel could function like air marshals on commercial flights, reported Bloomberg Business Week.

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“Imagine the concept of something like a ‘school marshal,’” Anthony said. “Now these guys are U.S. soldiers who are in plainclothes, whose job and part of their responsibility is to protect schools.”

The website reported that Anthony’s speech was accompanied by videos depicting future threats such as a U.S. drone hacked by Iran or a hotel massacre in Las Vegas, and he warned of the domestic threat posed by Islamic State militants.

“It could be that you have 100 of these guys who may be on our soil right now, who may even be U.S. citizens, who could legally walk into whatever gun store they choose, buy some assault rifles, and start attacking soft targets,” Anthony said.

He conceded the public would object to his plan as “a police state,” but he urged policy makers to sell school soldiers the same way corporations and creative artists sell other unpopular ideas.

“When we have a new product that has elements that we’re not sure how people will respond to, what do we do as a corporation?” Anthony said. “We market it, and we market it as much as we can, so that whether people like it or not, we do all the things we can to essentially brainwash people into liking it before it actually comes out.”

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Watch Anthony’s speech posted online by AtlanticCouncil: