Definition: (DOD, NATO) An area and the airspace above it within which friendly aircraft or surface-to-air weapons are normally given precedence in operations except under specified conditions.
See also air defense operations area.
Air Defense Action Area
From Department of Defense, for About.com
More of This Feature
Explore US Military
Must Reads
More from About.com
Lower Cholesterol
How to lower yours and eat healthy.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Just for Grads
Celebrate the graduate in your life.
©2008 About.com, a part of The New York Times Company.
All rights reserved.