DALLAS (AP) — Jim Leavelle, the longtime Dallas lawman who was captured in one of history’s most iconic photographs as he escorted President John F. Kennedy’s assassin as he was fatally shot, has died. He was 99. Leavelle,distinctive in his light-colored suit and white Stetson, is seen in the photograph with his hand on Lee Harvey Oswald, Leavelle’s body stiffening as nightclub owner Jack Ruby shot the handcuffed presidential assassin at close range on live TV in 1963. Leavelle appears shocked as Oswald grimaces in pain.