Spree shooting in PA

At Kraft Foods in Philly:

PHILADELPHIA – Minutes after a woman was suspended from her job at a Kraft Foods Inc. plant and was escorted out, she returned with a handgun and opened fire, killing two people and critically injuring a third before being taken into custody, police said.

The timeline says she came back with a gun "about ten minutes after the woman was escorted out." Time will tell whether she drove home to get the gun, or if she kept it in her car, which raises other questions. I would bet that she knew the axeman cometh, and prepared for the event accordingly.