An M50 chemical protective mask rests on a ground crew ensemble at the readiness and emergency management flight on Laughlin Air Force Base, Texas, Jan. 12, 2014. The M50 allows for a wide field of view with a single lens that spans the width of the face and provides 24 hours continuous eye-respiratory protection in chemical, biological, radiological, and nuclear environments. (U.S. Air Force photo by Airman 1st Class Ariel D. Delgado)
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