U.S. Army 1st Lt. Joseph Shane, a platoon leader assigned to the 2nd Battalion, 23rd Infantry Regiment, 4th Stryker Brigade, 2nd Infantry Division, participates in a simulated force on force exercise at the Shoalwater Bay Training Area in Queensland, Australia, during Talisman Sabre 2011 on July 19, 2011. Talisman Sabre is a combined biennial exercise between the U.S. and Australian militaries designed to enhance both nationsí ability to respond to regional contingencies.