threat. >> reporter: that's right, from florida. she was there for a political rally. we're outside the home tonight, the home is dark except for a lone porch light. law enforcement say it's positioned in front of the property. they are behind me here, but it was the secret service that was sfru instrumental in chappaqua. they were routinely screening the mail. they found a package that they immediately believed this could be an explosive device. they removed it and began a criminal investigation, bringing in federal authorities, state authorities, local authorities, and they were not alone, because from there, it was a domino effect to other devices that were explosive in nature. while this investigation was going on, hillary clinton was in florida at that political rally and she talked about the events. >> but it is a troubling time, isn't it? and it's a time of deep