Sully, President George H.W. Bush's service dog, is on to his next gig. Sully was "sworn in" at Walter Reed National Military Center in Maryland. He will now help wounded service members alongside other service dogs. The yellow Labrador was given to Bush 41 after the death of his wife, Barbara Bush, to help him cope. "Sully will go on to spread his love at Walter Reed Hospital. He was a loving companion when my Gampy needed him most," Jenna Bush Hager, Bush 41's granddaughter, posted on Twitter.