Umar Farouk Abdulmutallab’s attempt to blow up a Northwest Airlines jetliner carrying nearly 300 passengers and crew members reminds us that Muslim extremists devoted to Jihad, or Holy War, and seeking to kill or convert the world’s “infidels” to Islam, are still trying to kill Americans.

And U.S. Army Maj. Nidal Hasan’s November massacre of 13 people at Fort Hood reminds us that such Islamic extremists are not only operating in places like Pakistan and Iran, but can be “hiding in plain sight” all around us if we are not ever mindful that we are in a state of war.

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