Sydney Trains—which operates metropolitan trains—and NSW TrainLink intercity trains have a train guard. The guard is ultimately responsible for the safety of all passengers on the train. They control the operation of doors and Public Address, perform platform duties, provide basic customer service, operate the train to timetable and accept and deliver internal mail. On Sydney Trains, the guard is located in the middle of older trains, whilst on the newer Waratah trains, and on NSW TrainLink intercity services, they work from the rear. The guard is not responsible for inspecting tickets - this role is performed by Transport Officers and NSW Police.