The FCC said Tuesday that the false alert of a ballistic missile sent in Hawaii on Jan. 13 occurred when the worker in charge of alerts confused a drill for a real missile emergency. A highway sign in Honolulu corrects the error.

The FCC said Tuesday that the false alert of a ballistic missile sent in Hawaii on Jan. 13 occurred when the worker in charge of alerts confused a drill for a real missile emergency. A highway sign in Honolulu corrects the error.