"one down one on the run" and "gotcha" is the "new york post" headline in keeping with its tabloid style. today in tunisia thousands of western tourists are attempting to flee the country following the terror attack on a beach resort friday that killed nearly 40 people. british travel agencies have set jets to the company to get their clients out and officials plan to shut down 80 mosques outside state control in order to curb islamist extremism. multiple intelligence and law enforcement officials tell nbc news there's growing concern for an isis-inspired attack in the u.s. through the fourth of july weekend. kristen welker is joining us. what are you hearing about these concerns and are they related to yesterday's attack in tunisia, france and kuwait? >> reporter: alex good afternoon. there's no doubt that what happened yesterday overseas has raised fresh concerns but jell jens officials say this new information about a possible threat on july 4 came about prior to those attacks.