Timothy Douglas directs 'King Hedley II' at Arena Stage
'Keep breathing, everybody!" director Timothy Douglas says affably as an actor puts down a prop machete in a rehearsal room at Arena Stage. It's the lead-up to Arena's production of "King Hedley II," one of the works in August Wilson's revered 10-play cycle, and Douglas is trying to fine-tune the intensity of a climactic scene. Talking quietly in his deep voice, the 6-foot-3 director analyzes the way one scene's ener…