Former President George H.W. Bush's service dog, Sully, is preparing for a new role. At the end of the month, the 2-year-old lab will start working with veterans at Walter Reed National Military Medical Center in Maryland. He helped comfort Bush during the last months of his life. Chip Reid met Sully at a training facility in Long Island. Watch "CBS This Morning" HERE: http://bit.ly/1T88yAR Download the CBS News app on iOS HERE: https://apple.co/1tRNnUy Download the CBS News app on Android HERE: https://bit.ly/1IcphuX Like "CBS This Morning" on Facebook HERE: http://on.fb.me/1LhtdvI Follow "CBS This Morning" on Twitter HERE: http://bit.ly/1Xj5W3p Follow...
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