PHOTO: J.B. Hunter (55). By TOM SHANAHAN James and Lulu Hunter call their son J.B. “the softie of the family.” Their term of affection is understandable only if you recognize they’re retired non-commissioned Marines. They embraced the Corps’ creed as the military’s toughest branch. J.B., though, certainly doesn’t look like a “softie” on first impression. He’s Army football’s third-year starting right tackle, a 6-foot-4, 290-pounder. As for nicknames, he prefers “firstie,” the class designation for West Point seniors…