Football Hand-Off Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, hands Cooper Smith a signed football during a visit at the Pentagon, April 2, 2018. Troxell hosted Smith, a teenager with a multisystem genetic disorder. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE: Download: Full Size (1.11 MB) Credit: Petty Officer 1st Class Dominique A. Pineiro VIRIN: 180402-D-PB383-012B.JPG Photo Gallery