On June 27, 2011, the U.S. Supreme Court declined to hear the appeals of lawsuits from a group of 250 Iraqis who wanted to sue CACI International Inc. and Titan Corp. (now a subsidiary of L-3 Communications), the two private contractors at Abu Ghraib, over claims of abuse by interrogators and translators at the prison. The suits had been dismissed by the lower courts on the grounds that the companies held a derivative sovereign immunity from suits based on their status as government contractors pursuant to a battle-field preemption doctrine.