Sully, former President George H.W. Bush's service dog, lies next to his casket ahead of national memorial services for Bush this week.

Sully, former President George H.W. Bush's service dog, lies next to his casket ahead of national memorial services for Bush this week.

"Mission complete," Bush spokesperson Jim McGrath said when he posted the photo on Twitter tonight. #Remembering41 pic.twitter.com/AiVU6SNvrZ

— NBC News (@NBCNews) December 3, 2018