MSNBC Live with Tamron Hall 06/29/15

Heightened concerns over potential July 4th attacks

As the 4th of July weekend approaches, there are heightened concerns about a possible terror attack here in the U.S. Officials however, stress there is no specific or credible threat of an attack. Former CIA Counter-terrorism Analyst Aki Peritz joins Tamr ... more Duration: {{video.duration.momentjs}}