Despite this 'understanding' it is clear that law-enforcement is 'prepared'...

*ST. LOUIS MAYOR FRANCIS SLAY SPEAKS AT FERGUSON PRESS CONF.

*SLAY: NEED TO PLAN FOR FERGUSON PROTESTS REGARDLESS OF OUTCOME 

*SLAY: `IMPRUDENT' NOT TO BE PREPARED FOR `WIDESPREAD UNREST'

*SLAY: VIOLENCE WILL NOT BE TOLERATED

*ISOM: POLICE DEPT. HAD SENSITIVITY TRAINING OVER PAST 100 DAYS

*ISOM: OFFICERS TRYING TO WORK ON RESTRAINT, HAVING PATIENCE

*SLAY: WILL GIVE PROTESTORS CHANCE TO COMPLY BEFORE ARREST

*SLAY: POLICE WILL RESPOND IF PROTESTORS BECOME AGGRESSIVE

As ABC News reports,

The FBI has sent about 100 agents to the St. Louis area to help deal with any problems that could arise from the grand jury decision in the police shooting of Ferguson teenager Michael Brown.

In addition to the FBI, other federal agencies have also mobilized staffers to get to St. Louis today, sources told ABC News.