RICHMOND, Va. — A federal appeals court was scheduled to hear oral arguments Tuesday about an appeal from a U.S. military contractor ordered to pay $42 million for contributing to the torture and mistreatment of three former detainees at Iraq’s notorious Abu Ghraib prison two decades ago. Reston, Virginia-based CACI appealed last year's civil lawsuit verdict to the 4th U.S. Circuit Court of Appeals. Suhail Al Shimari, Salah Al-Ejaili and Asa’ad Al-Zubae testified at last year's trial that that