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Photos

Snapshots of what’s happening in the Defense Department.

Air Force Senior Master Sgt. David Perez, foreground, conducts the student portion of a mission briefing at the emergency operations center during Global Dragon Deployment in Perry, Ga., March 13, 2015. Perez is an emergency manager assigned to the Oklahoma National Guard's 137th Refueling Wing. The three-day mission provides a refresher course for airmen, allowing them to put their skills to use to identify live chemical, biological, radiological and nuclear agents and materials.

Air Force Senior Master Sgt. David Perez, foreground, conducts the student portion of a mission briefing at the emergency operations center during Global Dragon Deployment in Perry, Ga., March 13, 2015. Perez is an emergency manager assigned to the Oklahoma National Guard's 137th Refueling Wing. The three-day mission provides a refresher course for airmen, allowing them to put their skills to use to identify live chemical, biological, radiological and nuclear agents and materials.

Air Force Senior Master Sgt. David Perez, foreground, conducts the student portion of a mission briefing at the emergency operations center during Global Dragon Deployment in Perry, Ga., March 13, 2015. Perez is an emergency manager assigned to the Oklahoma National Guard's 137th Refueling Wing. The three-day mission provides a refresher course for airmen, allowing them to put their skills to use to identify live chemical, biological, radiological and nuclear agents and materials.

Photo Gallery