A federal police stands guard atop a vehicle after a shootout occurred in the town of La Ruana, Michoacan state December 17, 2014. A shootout between rival vigilantes in Mexico's western Michoacan state has left 11 dead, authorities said on Tuesday, in the clearest sign yet of renewed unrest in an area President Enrique Pena Nieto's government said had been pacified. According to local media, the groups fought at a checkpoint barricade at the entrance to La Ruana. (Photo by Alan Ortega/Reuters)

A member of the Fuerza Civil (Civil Force) police unit takes part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. Fuerza Civil, a tactical team of the police unit trained by the army, was created by the Nuevo Leon government in 2011 to curb down corruption and infiltration by drug gangs in the police corps, local media reported. Promising a new law to stop the infiltration of local governments by organized crime, President Enrique Pena Nieto pledged to reform the penal system and send an proposal to Congress to unify multi-layered police forces in Mexico's 31 states. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit pose for a picture during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

A member of the Fuerza Civil (Civil Force) police unit takes part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit cordon off a simulated crime scene during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police patrol during a media presentation to show the police model that the federal government wants for the rest of the country, in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit stand in formation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a gunfight simulation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Surveillance cameras are monitored by members of the Fuerza Civil (Civil Force) police unit during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Surveillance cameras are monitored by members of the Fuerza Civil (Civil Force) police unit during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)

Members of the Fuerza Civil (Civil Force) police unit take part in a simulated crime situation during a media presentation to show the police model that the federal government wants for the rest of the country, at the police academy in Monterrey December 17, 2014. (Photo by Daniel Becerril/Reuters)