Keywords: US Navy 040110-N-6157F-004 Members of Naval Mobile Construction Battalion Two Three (NMCB-23) check out their MCU-2P gas masks.jpg en Quantico Va Jan 10 2004 Members of Naval Mobile Construction Battalion Two Three NMCB-23 check out their MCU/2P gas masks prior to entering a chamber full of tear gas Nearly 200-selected Reserve Seabees from Virginia Delaware Pennsylvania and Maryland participated in combat training during a four-day exercise at Marine Corps Base Quantico Va U S Navy photo by Journalist 1st Class Mark D Faram RELEASED 2004-01-10 040110-N-6157F-004 Navy http //www navy mil/view_image asp id 11567 U S Navy photo by Journalist 1st Class Mark D Faram PD-USGov-Military-Navy Marine Corps Base Quantico Naval Mobile Construction Battalion 23 MCU-2/P Protective Mask |