officials are trying to figure out why 26-year-old devin kelley opened fire on a baptist church here. we've learned kelley's former in-laws had attended the church but were not there yesterday. we know kelly had been a member of the u.s. air force but was court marshalled in 2012 and given a bad conduct discharge. nbc has learned that that bad conduct discharge should have disqualified him from buying a gun. but it didn't for some reason. we also know that kelly was in tactical gear at the time of the attack and had multiple weapons in his car. so far federal officials say there is no obvious link to any organized terror group, stephanie. >> let's talk more about the gunman's motive and bring in msnbc terrorism analyst, malcolm nance. and jim cavanaugh, a retired special a gent in charge for the atf. jim, let's start with you. what are the atf agents on the scene looking for? i mean, the focus of this