Lance Cpl. James J. McKneely, a chemical, biological,

Lance Cpl. James J. McKneely, a chemical, biological, radiological and nuclear defense specialist with the 22nd Marine Expeditionary Unit and Apple Valley, Calif., native, activates chlorobenzalmalononitrile capsules, a riot control agent, during the M-50 gas-mask training event aboard Camp Lejeune, N.C., Aug. 27. The MEU was the first unit in the Marine Corps on the east coast to receive the new M-50 gas-mask. The annual training is designed to instill confidence in the mask and ensure the Marines know the proper wear of the equipment. (U.S. Marine Corps photo by Lance Cpl. John M. Raufmann)