The Marine Corps Logistics Base Barstow Fire Department trained for three days at MCLB begining on January 7th on harzardous materials procedures. MCLBB FD members received detailed instructions on handling chlorine gas leaks in cylinders and on rail cars. - The Marine Corps Logistics Base Barstow Fire Department trained for three days at MCLB begining on January 7th on harzardous materials procedures. MCLBB FD members received detailed instructions on handling chlorine gas leaks in cylinders and on rail cars.