U. S. Marine Corps Reserve Staff Sgt. Gonzalo Cano, a Food Service Specialist with 3rd Battalion, 24th Marines out of St. Louis Mo., visits with retired Marine Gunnery Sgt. Wayne Crawford at the Veterans Affairs Boston Health Care System, West Roxbury Campus in support of Marine Week Boston on May 4, 2010. Crawford, a Boston native, served from 1976-1997 as a Water Purification Specialist. - U. S. Marine Corps Reserve Staff Sgt. Gonzalo Cano, a Food Service Specialist with 3rd Battalion, 24th Marines out of St. Louis Mo., visits with retired Marine Gunnery Sgt. Wayne Crawford at the Veterans Affairs Boston Health Care System, West Roxbury Campus in support of Marine Week Boston on May 4, 2010. Crawford, a Boston native, served from 1976-1997 as a Water Purification Specialist.