Sailors raise their arms, signifying that they have successfully donned their MCU-2P gas mask during chemical, biological, and r

100914-N-2515C-097
SAN DIEGO (Sept. 14, 2010) Sailors raise their arms, signifying that they have successfully donned their MCU-2P gas mask during chemical, biological, and radiological (CBR) training aboard the amphibious transport dock USS Green Bay (LPD 20). The CBR training was held in preparation for the upcoming Unit-Level Training Assessment-Certification (Ultra-C). (U.S. Navy photo by Mass Communication Specialist 1st Class Larry S. Carlson/Released)

100914-N-2515C-097
 SAN DIEGO (Sept. 14, 2010) Sailors raise their arms, signifying that they have successfully donned their MCU-2P gas mask during chemical, biological, and radiological (CBR) training aboard the amphibious transport dock USS Green Bay (LPD 20). The CBR training was held in preparation for the upcoming Unit-Level Training Assessment-Certification (Ultra-C). (U.S. Navy photo by Mass Communication Specialist 1st Class Larry S. Carlson/Released)