SMITHTOWN, N.Y. (CBSNewYork) – Former President George H.W. Bush’s service dog, Sully, is preparing for his next mission.

By the end of the month, the 2-year-old Labrador will work with veterans at Walter Reed National Military Medical Center in Maryland.

SEE IT: Sully The Service Dog Returns To Long Island

Sully was named after Capt. Chesley Sullenberger, who landed his plane on the Hudson River, saving the lives of everyone on board.

As CBS News Chip Reid reports, service dogs support veterans and first responders with daily tasks and help mitigate the symptoms of post-traumatic stress disorder. They also provide comfort to vets in need.

MORE: President Bush’s Service Dog To Return To Long Island Before Heading To Walter Reed Medical Center

“He’s going to make people smile every day. He has got this fantastic trot, and his ears just flap about, and you just can’t not smile,” said his trainer, Valerie Cramer.

It costs $50,000 to train one service dog, but the veterans don’t pay a penny. It’s all paid by America’s VetDogs.