A shooter opened fire in a classroom building at the Naval Air Station in Pensacola on Friday morning in an attack that left four people dead, including the assailant, and multiple people wounded.
The shooting the second at a US Navy base this week prompted a massive law enforcement response and a lockdown at the base.
Eleven people were shot all together, including two sheriff's deputies who were the first to respond, one of whom killed the shooter, Escambia County Sheriff David Morgan said.
One of the deputies was shot in the arm and the other in the knee, and both were expected to recover, he said.
Morgan would not say if the shooter belonged to the military and said he did not want to speculate on whether the shooting was terrorism-related.
The base remained closed until further notice and those still on base would remain there until it was safe to evacuate, said commanding officer Capt Timothy Kinsella Jr NAS Pensacola employs more than 16,000 military and 7,400 civilian personnel, according to its website. '