Military officers stand at ease while waiting to perform their pass and review for the president during the 57th Presidential Inauguration in Washington, Jan. 21, 2013. Military involvement in the presidential inauguration dates back to April 30, 1789, when members of the U.S. Army, local militia units and revolutionary war veterans escorted George Washington to his first inauguration ceremony. (DOD photo by U.S. Air Force Staff Sgt. Wesley Farnsworth/Released)