Honorary Corpsman Navy Capt. Mark Kobelja, Walter Reed National Military Medical Center director, appoints service dog Sully H.W. Bush to the honorary rank of hospital corpsman 2nd class during his welcome-aboard ceremony at the USO Warrior and Family Center in Bethesda, Md., Feb. 27, 2019. SHARE: Download: Full Size (0.81 MB) Credit: Petty Officer 3rd Class Julio Martinez Martinez VIRIN: 190227-N-AM903-1043.JPG Photo Gallery