Marines from explosive ordinance disposal units located in Maryland and Virginia test the improved Remote Fuze Disassembly System, or RFDS, on the system’s newly designed training course in order to provide feedback. The RFDS is a disassembly system that defuses ordnance from a safer distance than ever before. - Marines from explosive ordinance disposal units located in Maryland and Virginia test the improved Remote Fuze Disassembly System, or RFDS, on the system’s newly designed training course in order to provide feedback. The RFDS is a disassembly system that defuses ordnance from a safer distance than ever before.