Remarks: During the pushback the ground engineer plugs his headset into the aircraft and walks with the tug. He/she's job is to look after the pushback, advise the pilots when it is clear to start engines and advise if there are any visual abnormal indications such as a tailpipe fire which may not be visible to the pilots even on their instruments. The engineer also advises when to set the parking brake after the pushback. Sometimes it is pouring rain with lightning around and these guys just go about their jobs with little recognition. Thanks a bunch engineers!