Explosive Ordnance Disposal Technician 2nd Class Jeffrey M. Gansmann, of Explosive Ordnance Disposal Mobile Unit Six, describes the capabilities of the iRobot PackBot 310 Small Unmanned Ground Vehicle to onlookers at the Inner Harbor during the Star-Spangled Spectacular. This event celebrates the bicentennial of the Battle of Baltimore, which provided the backdrop for Francis Scott Key's famous poem, "Defence of Fort McHenry," which later became America's national anthem.