U.S. Army soldiers from the 38th Engineer Company, 4th Stryker Brigade, 2nd Infantry Division and sappers from Australia's 2nd Troop, 1st Field Squadron, 1st Combat Engineer Regiment, plant plastic explosives to cut through a metal obstacle during Talisman Sabre 2011 at Shoalwater Bay Military Training Area in the Australian state of Queensland on July 15, 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.