McALESTER, Okla.—Oklahoma plans to execute a man Thursday for the torture slaying of his girlfriend’s 3-year-old son in 1993. Richard Stephen Fairchild, who turns 63 on Thursday, is set to receive a lethal injection at the Oklahoma State Penitentiary in McAlester. Fairchild, an ex-Marine, was convicted of killing Adam Broomhall after the child wet the…

McALESTER, Okla.—Oklahoma executed a man Thursday for the torture slaying of his girlfriend’s 3-year-old son in 1993. Richard Stephen Fairchild, who turned 63 on Thursday, received a lethal injection at the Oklahoma State Penitentiary in McAlester and was declared dead at 10:24 a.m. Fairchild, an ex-Marine, was convicted of killing Adam Broomhall after the child…