Former President George H.W. Bush s service dog, Sully, is now a sworn member of the U.S. Navy.

The yellow Labrador retriever joined Walter Reed National Military Medical Centers Facility Dog Program in Bethesda, Maryland, on Wednesday as a sworn service dog.

Sully, also now known as Navy Hospital Corpsman (HM) Petty Officer Sully, took an oath before U.S. servicemen and -women and at least six other service dogs, while vowing to comfort, support and cheer warriors and their families, active duty and retired.

Sully additionally agreed, with a silent shake of his paw, that he was taking on the role freely, without any promise of treats or tummy rubs.

A photo later posted to Sullys Instagram account celebrated his enlistment, calling it an honor and privilege to join a wonderful group of dogs at [Walter Reed Bethesda.]

I look forward to continue my mission to serve veterans as my best friend wanted me to, the post read.