Governor Jay Nixon signed an executive order [pdf] calling up the National Guard.
The press release:
August 18, 2014
Jefferson City, MO
Gov. Jay Nixon has signed an executive order directing additional resources through the Missouri National Guard to help restore peace and order and to protect the citizens of Ferguson.
“Tonight, a day of hope, prayers, and peaceful protests was marred by the violent criminal acts of an organized and growing number of individuals, many from outside the community and state, whose actions are putting the residents and businesses of Ferguson at risk. I join the people of Ferguson, and all Missourians, in strongly condemning this criminal activity that included firing upon law enforcement officers, shooting a civilian, throwing Molotov cocktails, looting, and a coordinated attempt to block roads and overrun the Unified Command Center. These violent acts are a disservice to the family of Michael Brown and his memory, and to the people of this community who yearn for justice to be served, and to feel safe in their own homes. Given these deliberate, coordinated and intensifying violent attacks on lives and property in Ferguson, I am directing the highly capable men and women of the Missouri National Guard to assist Colonel Ron Replogle and the Unified Command in restoring peace and order to this community.”