Hawaii worker who sent false alert had problems but kept job

In this Jan. 19, 2018 file photo, Hawaii Emergency Management Agency Administrator Vern Miyagi listens during a hearing with state lawmakers about a mistaken missile alert in Honolulu. Miyagi has resigned and a state employee who sent an alert falsely warning of an incoming ballistic missile has been fired. Officials also said Tuesday, Jan. 30, that a second agency worker quit and another was being suspended without pay after the mistake caused widespread panic earlier this month. (AP Photo/Jennifer Sinco Kelleher, File)

HONOLULU — Hawaii emergency management officials knew for years that an employee had problems performing his job. Then, he sent a false alert warning of an imminent missile attack earlier this month.