Document says number of attempted attacks on U.S. is at all-time high

Document says number of attempted attacks on U.S. is at all-time high
From Carol Cratty, CNN
May 27, 2010 1:38 a.m. EDT

STORY HIGHLIGHTS
DHS memo says number and pace of attempted attacks have surpassed "any other previous one-year period"
Attacks are expected to be attempted with "increased frequency," document warns
Report cites recent cases of homegrown terrorism, including failed Times Square bombing
Terror groups are increasingly using westerners as operatives, report says

Washington (CNN) -- Just weeks after the failed car bombing of New York's Times Square, the Department of Homeland Security says "the number and pace of attempted attacks against the United States over the past nine months have surpassed the number of attempts during any other previous one-year period."

That grim assessment is contained in an unclassified DHS intelligence memo prepared for various law enforcement groups, which says terror groups are expected to try attacks inside the United States with "increased frequency."

CNN obtained a copy of the document, dated May 21, which goes on to warn, "we have to operate under the premise that other operatives are in the country and could advance plotting with little or no warning."
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Document says number of attempted attacks on US is at all time high