Keywords: US Navy 101011-N-9564W-059 Ensign Michael Perry, commander of Headquarters Company from Naval Mobile Construction Battalion (NMCB) 74.jpg en CAMP SHELBY Miss Oct 11 2010 Ensign Michael Perry commander of Headquarters Company from Naval Mobile Construction Battalion NMCB 74 drinks water from his canteen through the drinking hose of his M-40A gas mask during the battalion's Field Training Exercise NMCB-74 is in the field at Camp Shelby Miss conducting their field training before deploying later this year U S Navy photo by Mass Communication Specialist 1st Class Ryan G Wilber/Released 2010-10-11 101011-N-9564W-059 Navy http //www navy mil/view_image asp id 92755 U S Navy photo by Mass Communication Specialist 1st Class Ryan G Wilber PD-USGov-Military-Navy Camp Shelby Naval Mobile Construction Battalion 74 Males wearing gas masks M40 Field Protective Mask |