Maj. John R. Bitonti II, Headquarters and Service Battalion, helps his son try out the latest weapon technology on display during the Modern Day Marine Military Exposition at Marine Corps Base Quantico, Va., Sept. 29. Although many of the products were not currently in use by the Corps, the exposition gave vendors the opportunity to promote their products to Marines. - Maj. John R. Bitonti II, Headquarters and Service Battalion, helps his son try out the latest weapon technology on display during the Modern Day Marine Military Exposition at Marine Corps Base Quantico, Va., Sept. 29. Although many of the products were not currently in use by the Corps, the exposition gave vendors the opportunity to promote their products to Marines.