(BBC) The labrador who worked as a service dog for President George HW Bush has been pictured resting beside his coffin, in a moving tribute.
Mr Bush, who served as the 41st US president between 1989 and 1993, died late on Friday at the age of 94.
Sully the dog is travelling with the casket on the flight from Texas to Washington and back this week.
Mr Bush’s body is due to lie in state this week ahead of a day of national mourning.
The coffin is being flown from Texas to DC on board Air Force One - temporarily renamed Special Air Mission 41, in homage to the late president - and then back on Wednesday, with Sully accompanying the body throughout.
The picture was tweeted by Mr Bush’s spokesman, Jim McGrath, showing Sully next to Mr Bush’s casket on Sunday along with the caption: "Mission complete."
Social media users thanked Sully for his services and commented on his and dogs’ loyalty generally towards their owners.