Authorities say they consider information about the threat of a domestic attack as among the most credible received since Sept. 11. Citing intelligence that terrorists are looking to “hit us hard,” the Justice Department and the FBI are launching an intensive campaign to head off a possible terrorist attack in the United States this summer, law enforcement officials said Tuesday. The intelligence community has recently developed information indicating that Al Qaeda or other Middle Eastern terrorist groups are in the United States and gearing up for a major strike this summer, a top law enforcement official said. The intelligence offers no specifics in terms of times, dates or methods of attack, the law enforcement official said. The official said authorities considered the threat information as among the most credible received by the government since the attacks of Sept. 11, 2001, in which nearly 3,000 people died. Full Story