Video posted online shows a gunman emerging from the door of the McDonald's, raising what appears to be a pistol with both hands and aiming at people on the sidewalk, firing as they flee in terror.
With the tragedy in California within the last year and now in Orlando, the Oklahoma City Police Department took the time to offer tips on what we should do if we ever find ourselves in the midst of an active shooter.
The White House says that during the 8 p.m. address Obama will provide an update on the attack that killed 14 and wounded 21, and will also discuss the broader threat of terrorism.