| 1. | the act of flying while waiting for combat orders or for enemy airplanes to appear. |
| 2. | the signal to take stations for such action. |
| air alert | |
noun | |
| 1. | the time period during which military and civilian agencies are prepared for an enemy air attack |
| 2. | the condition in which combat aircraft are airborne and ready for an operation; "aircraft in the Mideast are on air alert" |
| 3. | the warning signal that begins a period of preparation for an enemy air attack |
