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Photos

Snapshots of what’s happening in the Defense Department.

Air Force Capt. Lance Coldren, second right, tests an oxygen mask with an aircrew flight equipment technician during Exercise Cope North at Andersen Air Force Base, Guam, Feb. 20, 2017. Coldren is a pilot assigned to the 67th Fighter Squadron. Flight equipment aircrew conduct a series of tests and checks on equipment before every mission, to include checking the airflow of masks, oxygen levels and ensuring headsets are working properly. Air Force photo by Senior Airman John Linzmeier

Testing Oxygen Mask

Air Force Capt. Lance Coldren, second right, tests an oxygen mask with an aircrew flight equipment technician during Exercise Cope North at Andersen Air Force Base, Guam, Feb. 20, 2017. Coldren is a pilot assigned to the 67th Fighter Squadron. Flight equipment aircrew conduct a series of tests and checks on equipment before every mission, to include checking the airflow of masks, oxygen levels and ensuring headsets are working properly. Air Force photo by Senior Airman John Linzmeier

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