SACRAMENTO, Calif. - Officials say a woman caught trying to smoke on a Southwest flight has been arrested after shouting she was going to kill everyone on the plane. Sacramento County sheriff's spokesman Shaun Hampton said Monday that 24-year-old Valerie Curbelo was arrested on the tarmac when the plane landed Saturday. Hampton says when the crew stopped Curbelo from having a cigarette in the plane's bathroom, she threatened to kill all the passengers ...