(CNN) Sully H.W. Bush, the former service dog to late President George H.W. Bush, has started a new job with the US Navy at Walter Reed National Military Medical Center outside Washington.

During a ceremony streamed live on Facebook on Wednesday, the yellow Labrador was appointed to the rank of hospital corpsman second class.

"Your appointment as a petty officer in the United States Navy makes you heir to a long and proud tradition of naval leadership," said a Navy spokesman at the Bethesda, Maryland, ceremony. The dog then was outfitted with a new "military uniform" -- a vest representing the medical center's dog team.

Sully H.W. Bush, former service dog to the late President George H.W. Bush, being sworn in at the Walter Reed National Military Medical Center on February 27, 2019 in Bethesda, Maryland.

Sully's personalized oath of enlistment: "Do you affirm or pant as a hospital corpsman in the United States Navy that you will support, comfort and cure warriors and their families, active duty and retired? That you embrace our staff and bear unconditional love and solace, especially on busy days? That you take this obligation freely, without any promise of treats or tummy rubs and that you will faithfully discharge the duties to provide joy, love and nurturing for our soldiers, sailors, airmen, Marines, and sailors and their families?"

Sully joins the medical center's facility dog program. His duties will include reducing stress and increasing well-being among patients and staff.