Concord, Calif., native Cpl. Maxwell Gumbinger, a bulk fuel specialist with Combat Logistics Battalion 13 based out of Marine Corps Base Camp Pendleton, Calif., is back home to demonstrate military capabilities during San Francisco Fleet Week 2014, from Oct. 6 to 13. The event focuses on interoperability training between civil and military agencies to improve cooperation and coordination, as well as increase readiness through a range of humanitarian assistance operations.