RIDERLESS HORSE A soldier from the 3rd U.S. Infantry Regiment, known as "The Old Guard," leads a riderless horse during the Memorial Day parade in Washington, D.C., May 27, 2013. The riderless horse carries a soldier's boots reversed in the stirrups. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 043494-I-JPJ18-238.jpg Photo Gallery