Mission: The ILEAS Mobile Field Force (MFF) is designed to provide rapid, organized and disciplined response to civil disorder, crowd control or other tactical situations involving the distribution of pharmaceuticals from the National Strategic Stockpile, weapons of mass destruction incidents as well as other more conventional events.

Function: The MFF is basically a platoon of police officers of various ranks with a leader.  Tactics used are based on small squad tactics developed by the Office of Domestic Preparedness as well as the more traditional Mobile Field Force tactics.  A team generally consists of four squads and may be supplemented by specialized units from ILEAS member agencies.

The Illinois Law Enforcement Alarm System Mobile Field Force, replete with riot gear, a Humvee and a Long Range Acoustic Device (LRAD).

Here's a look at their webpage and what the scene looked like when they moved in:

Photo via labor/community organizer @daneyvilla

Photo via labor/community organizer @daneyvilla

more on the arrest here

http://www.dailykos.com/story/2012/10/02/1138784/-Riot-Police-Used-...