8\14\11: NYPD riot units conduct drills

[Renew Deal]

In the wake of the London riots, the NYPD Disorder Control Unit held a “mobilization exercise” on Randall’s Island on Friday to rehearse its response should out-of-control riots break out here, Metro has learned.

Approximately 180 police officers total from each borough’s task force, including the horseback and aviation units, came out for the drill, according to police.
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http://www.metro.us/newyork/local/article/942885--nypd-riot-units-conduct-drills

NYPD has 40,000 cops, so 180 is a very small number. But they clearly had trouble on their minds.