Australian Lt. Morgan Greenlees (left), logistics troop commander, and Cpl. Christine Bourke (right), storeman, both with 1st Signal Regiment, carry a truck tire up a small hill during a hill walk in the early hours with I Corps Soldiers on Gallipoli Barracks, Australia, July 8, prior to the start of Talisman Sabre 15. Talisman Sabre is a biennial exercise, consisting of U.S. and Australian forces with a contingent of 30,000 participants. I Corps is using TS as a certification exercise to validate as a Combined Forces Land Component Command.