Paratroopers assigned to 127th Engineer Battalion, 1st Brigade Combat Team, 82nd Airborne Division react to exposure to CS gas inside a chamber Oct. 28, 2014, at Fort Bragg, N.C. Paratroopers from throughout the battalion cycled through the gas chamber to test their newly-issued masks, which feature twin conformal filters and provide 24 hours of continuous eye-respiratory protection in nuclear, biological and chemical environments. The M50 replaces the M40 field protective mask. (U.S. Army photo by Staff Sgt. Mary S. Katzenberger)
Staff Sgt. Mary Katzenberger
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/1668056">https://www.dvidshub.net/image/1668056</a>