MARINE CORPS BASE HAWAII — Petty Officer 2nd Class Josiah Halstead, aviation electronics technician, Marine Aviation Logistics Squadron 24, examines subsitutes for smokeles tobacco, Nov. 7, 2011. Marine Corps Base Hawaii helps service members and their families stop using smokeless tobacco with several events including Through with Chew Week, held from Feb. 17 to 23. The MCB Hawaii Health Promotion office featured a display about the dangers of tobacco use during the Great American Spit Out, at Anderson Hall Dining Facility, Thursday. (Official U.S. Marine Corps photo by Christine Cabalo/Released) - MARINE CORPS BASE HAWAII — Petty Officer 2nd Class Josiah Halstead, aviation electronics technician, Marine Aviation Logistics Squadron 24, examines subsitutes for smokeles tobacco, Nov. 7, 2011. Marine Corps Base Hawaii helps service members and their families stop using smokeless tobacco with several events including Through with Chew Week, held from Feb. 17 to 23. The MCB Hawaii Health Promotion office featured a display about the dangers of tobacco use during the Great American Spit Out, at Anderson Hall Dining Facility, Thursday. (Official U.S. Marine Corps photo by Christine Cabalo/Released)