air alert
definition: the warning signal that begins a period of preparation for an enemy air attack
example:
speech part: noun
synonyms:
definition: the condition in which combat aircraft are airborne and ready for an operation
example: aircraft in the Mideast are on air alert
speech part: noun
synonyms:
definition: the time period during which military and civilian agencies are prepared for an enemy air attack
example:
speech part: noun
synonyms: