Airmen from the 49th Civil Engineer and Materiel Maintenance Squadrons take cover under a hardened shelter in level four mission-oriented protective postures during a Bivouac exercise April 11. During a simulated base attack, Airmen sought immediate shelter in a solid-structure as a preventative measure, as well as donned chemical protection gear to protect themselves from any possible form of bio-warfare used by hostile forces.
Airman 1st Class Michael Shoemaker
Taken on 11 April 2012
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