Master Sgt. Amber Pfarr, 4th Civil Engineer Squadron emergency management training and logistics section chief, explains to Airmen assigned to the 4th Communications Squadron the attack warning signals for chemical, biological, radiologic or nuclear threat areas March 26, 2019, at Seymour Johnson Air Force Base, North Carolina. The warning signals vary based on how likely an attack is.

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Keywords: 4fw, 4th, archive, armed, cs, defence, fighter, forces, johnson, military, reportage, servicemen, seymour, sjafb, usa, wing