LERTCON

Alert Condition (English, alarm status '), also abbreviated as LERTCON called one of the seven different emergency levels of the U.S. armed forces may be called during a national emergency. The seven LERTCONs are divided into five Defense Conditions ( DEFCONs ) and two Emergency Conditions ( EMERGCONs ). The highest alert level that has ever been proclaimed, the alert level DEFCON was in 1962 during the Cuban Missile Crisis 2