U.S. Army soldiers assigned to 2nd Battalion, 23rd Infantry Regiment, 4th Brigade, 2nd Infantry Division, Reconnaissance Platoon from Joint Base Lewis-McChord carry out a night time live-fire exercise during Talisman Sabre 2011. TS11 is a biennial training event aimed at improving and validating the Australian Defense Force and the United States combat readiness and interoperability as a joint task force.