北部边缘-2009 联合演习中,诺斯罗普·格鲁门公司的 BAC 1-11 试验机准备起飞测试AN/APG-81有源电子扫描阵列雷达,北部边缘演习营造了世界上最大最复杂的机载电子战环境,为 BAC 1-11 试验机创造了极佳的测试条件。(Crew chiefs prepare to launch their BAC 1-11 aircraft for a mission June 18, 2009 during Exercise Northern Edge 09 held at Elmendorf Air Force Base, Alaska. The BAC 1-11 is flying missions during Northern Edge to test the F-35 Joint Strike FighterÕs APG-81 radar. Northern Edge is the largest most complex airborne electronic warfare environment and is AlaskaÕs largest military training exercise that prepares joint forces to respond to crises throughout the Asia-Pacific region.)