Defense Secretary Mark Esper has raised concerns within the Trump administration about federal agents patrolling the streets of U.S. cities in camouflage uniforms similar to those worn by troops in war zones, Jonathan Hoffman, the chief Pentagon spokesperson said on Tuesday.

According to Hoffman, Esper has said that “we want a system where people can tell the difference.”

“We saw this take place back in June when there were some law enforcement that wear uniforms that make them appear military in appearance,” Hoffman said.

Esper expressed concern that in some cases, federal law enforcement officers were being confused with troops because federal officers are wearing the same uniforms. This follows the nationwide protests, looting, and violence over the killing of George Floyd in June.