Capt. Daniel W. Arguello (first from left) and 1st Lt. Joshua D. Salazar (fourth from left) from the Aberdeen Proving Ground, Maryland-based 1st Area Medical Laboratory instruct students during the Radiological Hazards Operations Course at the Idaho National Laboratory in Idaho Falls, Idaho.

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Keywords: 1st, 20th, aberdeen, area, cbrne, command, ground, hazards, idaho, laboratory, medical, national, operations, proving, radiological