Black leaders called for the suspension of two white Atlanta police officers who killed a black man who a coroner said was shot six times--five in the back--at extremely close range. The Rev. Joseph Lowery, president of the Southern Christian Leadership Conference, said Officers R. A. Watson and M. L. Long, now on administrative duties, should be removed from duty completely pending investigation. They were serving warrants at a housing project Thursday when they shot Eddie Lee Callahan, 37, after chasing him for stealing a car. Several witnesses said Callahan was face down and handcuffed when he was shot. Detectives said Callahan was trying to get an officer's gun when he was shot.