Security Expert James Carafano weighs in on the latest surrounding the investigation of the twin explosions at the Boston Marathon

This morning on a special edition of “Early Start,” security expert and Vice President at the Heritage Foundation James Carafano weighs in on the investigation of the twin explosions at the Boston Marathon.

Carafano says law enforcement officials "are going to get a lot of evidence and in the first 72 hours they're going to have a lot of information." He adds that while all the information might not be shared with the public, "we'll know very early on... within 72 hours where the likely candidates are."