investigating whether muhammad youssef abdulazeez was inspired by isis or another terrorist organization or muhammad youssef abdulazeez was working on their direction. now let's hear from the president who spoke just minutes ago. >> i just received a briefing from fbi director comey as well as my white house team about the tragic shooting that took place in chattanooga today. we don't know yet all the details. we know that what appears to be a lone gunman carried out these attacks. we have identified a name. and at this point, a full investigation is taking place. the fbi will be in the lead. working closely with local law enforcement. we've also been in contact with the department of defense to make sure that all our defense facilities are properly