U.S. intelligence and law enforcement authorities share a growing concern over the possibility of an ISIS-inspired attack in the U.S. through the July 4 weekend, sources told NBC News. The threat "is based on both intelligence and analysis," intelligence and law enforcement sources said. The analysis of the threat is based in part on the "new normal" of ISIS planning, which involves the group's use of social media. Information regarding the Fourth of July threat came before Friday's terror attacks in France, Tunisia and Kuwait, the intelligence and law enforcement officials said.
