He will be buried at the presidential library in Texas, alongside his wife, Barbara Bush, who died seven months ago. He wrote, "Air Force One has arrived in Houston for what will technically be called "Special Air Mission 41" tomorrow and Wednesday".
KTRK-TV in Houston reports that Sully will return to America's VetDogs in NY through the holiday season before joining the Water Reed National Military Medical Center's Facility Dog Program.
He died aged 94 in Houston, Texas.
David J. Phillip Pool AP
Former President George H.W. Bush is returning to Washington as a revered political statesman, hailed by leaders across the political spectrum and around the world as a man not only of greatness but also of uncommon decency and kindness.
President Donald Trump has declared Wednesday, Dec. 6, a Day of National Mourning.
Bush will lie in state in the Capitol starting Monday and a service will be held at the Washington National Cathedral later in the week.