A document obtained and witnesses interviewed by Fox News raise new questions over whether there was an effort by the Defense Department to cover up a pre-9/11 military intelligence program known as "Able Danger." At least five witnesses questioned by the Defense Department's Inspector General told Fox News that their statements were distorted by investigators in the final IG's report -- or it left out key information, backing up assertions that lead hijacker Mohammed Atta was identified a year before 9/11.