Missouri Gov. Jay Nixon held a press conference Tuesday afternoon to announce security plans for Ferguson, Mo., in light of the upcoming grand jury announcement on whether to indict Ferguson police officer Darren Wilson, who shot an unarmed Michael Brown on August 9. Nixon’s annoucement focused on “the dual pillars of safety and speech.”

Nixon said the security effort would be coordinated under a “unified command” with police departments across the state, with the National Guard part of the state’s contingency plan.

Last week, a group of demonstrators presented police with their own list of 19 demands or rules of engagement, including a demand that police avoid riot gear and “wear only the attire minimally required for their safety.”