Members of the United States Army Training and Doctrine Command band from Fort Eustis, Va., and members of the United States Air Force Heritage of America band from Langley Air Force Base, Va., perform the national anthem for spectators during a concert for Constitution Day in Colonial Williamsburg, Va., Sept. 18, 2011. Constitution Day marks the anniversary of the signing of the Constitution of the United States 224 years ago. (United States Air Force photo by Staff Sgt. Jeff Nevison/Released)