Air Force Staff Sgt. Albert Brown communicates with the pilots of an E-3 Sentry prior to take off at Joint Base Elmendorf-Richardson, Alaska, during Exercise Polar Force 12-7 Oct. 21. The exercise was designed to test base preparedness for various is a 962nd Aircraft Maintenance Unit E-3 crew chief from Redding, Calif.

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Air Force Staff Sgt. Albert Brown communicates with the pilots of an E-3 Sentry prior to take off at Joint Base Elmendorf-Richardson, Alaska, during Exercise Polar Force 12-7 Oct. 21. The exercise was designed to test base preparedness for various is a 962nd Aircraft Maintenance Unit E-3 crew chief from Redding, Calif.

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