* Shooting took place on base early Friday morning, sparking a lockdown. * Sources identified the suspected gunman as Saudi Air Force aviation student Mohammed Saeed Alshamrani. * As of Friday evening, six Saudi nationals have been detained for questioning.* It's reported that three of them filmed the shooting as it happened. * Rep Matt Gaetz, a Republican representing Pensacola, called the shooting 'an act of terrorism'. * President Trump tweeted that King Salman told him 'the Saudi people are greatly angered by the barbaric actions of the shooter...'. * Three other people were shot and killed during incident inside...