[retrokitten]

Early report of a third shooter in a different location (near the PX), began shooting after the first onslought with 7 dead.

It was a coordinated attack on different parts of the base simultaneously? It sounds like Columbine.

[NautiNurse]

It was a coordinated attack on different parts of the base simultaneously?

Yep--and there may very well be more of them.