Soldiers assigned to the 3d U.S. Infantry Regiment (The Old Guard), perform during the opening ceremony of the Association of the United States Army (AUSA) 2017 annual meeting and exposition on Oct. 9, 2017 at the Walter E. Washington Convention Center in Washington, D.C. AUSA is a non-profit educational and professional organization that supports America’s Army, our Soldiers, Army civilians, and their families.