JOINT BASE LEWIS-MCCHORD, WASH. — The U.S. soldier accused of killing 16 civilians in a nighttime attack on two villages in Afghanistan in March was largely calm and compliant when he turned himself in, witnesses testified Tuesday at the second day of his hearing. Staff Sgt. Robert Bales followed orders, sometimes sat with his head in his hands and made a joke in a failed effort to ease the tension. [captio ...