English Dictionary

QRA

noun

(military, US) Initialism of quick reaction alert. A military and NATO term to define a higher state of readiness in which aircraft will become airborne within minutes to intercept and identify unknown aircraft or intercept one that has lost contact with air traffic control.

The QRA was put on high alert after receiving intelligence of a possible threat.

意味（1）

(military, US) Initialism of quick reaction alert. A military and NATO term to define a higher state of readiness in which aircraft will become airborne within minutes to intercept and identify unknown aircraft or intercept one that has lost contact with air traffic control.