BROOKLYN - Jewish groups in Brooklyn and across the nation are concerned after it was revealed yesterday that Chicago-area synagogues were the target of an alleged Yemeni terrorist plot.

The Anti-Defamation League has called on synagogues to increase security in their mailrooms and call police if they see anything suspicious.

"The reaction I have every time you hear something like this, 'thank god we have a good system in the U.S.,'" says Brooklyn resident Mark Adams.