北部边缘-2007 联合演习中，美国陆军第52航空团一架 UH-60L 直升机执行医疗后送任务。（North Pole, Alaska – A crew member from an Army UH- 60 Black Hawk helicopter from 1st Battalion, 52nd Aviation regiment scans the landing zone used to evacuate “casualties” from a homeland defense attack scenario conducted in collaboration with civilian first responders from North Pole and Fairbanks, Alaska. The air crew was participating in exercise Alaska Shield / Northern Edge 07. The exercise is a state of Alaska / US Northern Command sponsored homeland defense / defense support of civil authorities exercise; part of the national-level Ardent Sentry / Northern Edge 07 exercise.）

北部边缘-2007 联合演习中，美国空军第12战斗机中队（12FS）一架 F-15C 战斗机在白令海进行模拟拦截。（OVER THE BEARING SEA (May 12, 2007) Ð A F-15 Eagle fighter from the 12th Fighter Squadron based out of Elmendorf Air Force Base, Alaska intercept a potential threat aircraft as part of Alaska Shield/Northern Edge 07 (AKS/NE 07). AKS/NE 07 is a State of Alaska/US NORTHCOM sponsored homeland defense/defense support of civil authorities exercise; part of the national-level Ardent Sentry/Northern Edge 07. ItÕs an opportunity to practice responding to homeland defense/disaster events with the federal, state, local & private-sector team. U.S. Navy photo by Mass Communication Specialist 1st Class Daniel N. Woods.）

北部边缘-2007 联合演习中，美国空军二架 F-15C 战斗机在太平洋进行模拟拦截。（OVER THE PACIFIC OCEAN (May 7, 2007) F-15 Eagle fighters from Elmendorf Air Force Base, Alaska intercept a potential threat aircraft, from Colorado Air National Guard, 200th Airlift Squadron as part of Alaska Shield/Northern Edge 07 (AKS/NE 07). AKS/NE 07 is a State of Alaska/US NORTHCOM sponsored homeland defense/defense support of civil authorities exercise; part of the national-level Ardent Sentry/Northern Edge 07. It an opportunity to practice responding to homeland defense/disaster events with the federal, state, local & private-sector team. U.S. Navy photo by Mass Communication Specialist 1st Class Daniel N. Woods.）