Dressed in Mission-Oriented Protective Posture 4 (MOPP-4), with M40A1 Chemical-Biological masks, the ability to perform in chemical environments is tested by North Dakota Army National Guard (NDARNG) Soldiers from the 957 Multi-Role Bridge Company. The 957th recently mobilized to support Operation ENDURING FREEDOM. Upon completion of training, processing for deployment and receiving travel orders the 957th will deploy overseas for up to one year