The U.S. Air Force’s E-3G, with its Block 40/45 modifications, was tested over Alaska during Exercise Northern Edge to allow weapons officers to take full advantage of the improvements.

U.S. Air Force photo/ Staff Sgt. William Banton
[thumb]http://www.jber.af.mil/news/story.asp?id=123452099[/thumb]

![AA_19710813_ADF_Config_772_inboard_1267828237_5922[1]](http://alert5.com/wp-content/uploads/2015/06/AA_19710813_ADF_Config_772_inboard_1267828237_59221-500x183.jpg)