Duncan questioned Marshal Mars and inspected the Halliburton case he was carrying at a holding area of Sydney Airport. He told Mars that he'd "have to stow it in the crew luggage compartment in the front". He also questioned the need for 5 guns and why there was a toy plane. ("Exodus, Part 1")
- He was credited as "Aussie official".
- His name was revealed in HD, by his nametag.