Caisson Kiss Army Spc. Colin Martin kisses Hank, an 11-year-old horse assigned to the Caisson Platoon of the 3rd U.S. Infantry Regiment, known as “The Old Guard,” before conducting funeral training at Arlington National Cemetery, Va., Feb. 6, 2018. Army photo by Elizabeth Fraser SHARE: Download: Full Size (4.91 MB) Credit: Elizabeth Fraser VIRIN: 180206-A-IW468-446C.JPG Photo Gallery