Meanwhile, the families of three men who died at the U.S. military base at Guantánamo Bay, Cuba, five years ago filed an appeal Monday in an attempt to revive their lawsuit against former U.S. Secretary of Defense Donald Rumsfeld. The U.S. military claims the men committed suicide in June 2006, but attorneys at the Center for Constitutional Rights say evidence has since emerged suggesting the men may have been killed at a secret black site at Guantánamo.