Terror Attacks Against U.S. At All-Time High

The pace and number of attempted terror attacks against the U.S. in over the past nine months has surpassed the number of attempts during any previous one-year period, according to an internal Department of Homeland Security report issued on Friday, May 21.

The report notes chillingly that while US officials "lack insights" they believe that "operatives are inside the country and could advance plotting with little or no warning."

The DHS "Intelligence Note," a short, non-classified report, which makes to concrete the concerns of a number of homeland security experts who have discussed with ABC News the pace and nature of the individual attempts. The report notes that al Qaeda in the Arabian Peninsula and the Pakistani Taliban have "expanded their focus" to include the United States.

Homeland Security and law enforcement officials interviewed by ABC News on the condition their names not be used are concerned that the pace will continue to ramp up and that increasingly the attackers will be difficult-to-detect homegrown extremists.

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