Air Force veteran Jesse Graham talks to third and fifth graders at Crossroads Elementary School aboard Marine Corps Base Quantico about his service dog, Stanley, a 2 1/2-year-old black lab Mar. 18. - Air Force veteran Jesse Graham talks to third and fifth graders at Crossroads Elementary School aboard Marine Corps Base Quantico about his service dog, Stanley, a 2 1/2-year-old black lab Mar. 18.