A Hawaii employee who mistakenly sent an alert warning of an incoming ballistic missile earlier this month, creating a panic across the state, thought an actual attack was imminent, the Federal Communications Commission said Tuesday. Hawaii has been testing alert capabilities, and the employee for the state Emergency Management Agency mistook a drill for a real warning about a missile threat. He responded by sending the alert without sign-off from a supervisor at a time when there are fears over the threat of nuclear-tipped missiles from North Korea.