There was only one shooter. The other two have been cleared and released.
My guess is some other folks drew pistols, even if CCW ain’t kosher on an Army base. So many witnesses saw two other guys with drawn pistols. But they have been released, adn cleared.
I believe there is still one guy in custody, the one who was arrested at the golf course.
They guy shot until he ran out of ammo. The other ones with drawn weapons were civilian security employed by Ft. Hood. It ain’t easy gettin’a weapon on that post. Which makes me wonder how he got them one. Could one of his “paitents” worked in a weapons area?