this is a regular thing that the u.s. military's doing. so this is a very common practice by the way. pete williams. he's here with me. and our national security and pentagon reporter courty cuby joins me on the phone. pete, let me start with you. what new have we learned? >> well, he's a second lieutenant or was a second lieutenant in the saudi air force who came here for flight training. there are sort of three groups that come. very junior officers, very senior ones. he was in the middle. beyond that, we don't really know much about him. there are some pretty fundamental questions like how did he get the gun? the sheriff's office says he did the shooting today with a handgun carrying it out in a classroom building at the naval air station. now, this is a training base. so it has a lot of classrooms. but the sheriff's office says that when the agent or when the officers came in, the deputies came in to encounter the shooter. it actually played out over two floors of that classroom building. so they were obviously pursuing him. and as you say, they were not seriously wounded.