Maryland’s highest court has ordered Baltimore police officer William Porter to testify against five fellow officers at their trials over the fatal arrest of African American Freddie Gray. Gray’s family attorney said his spine was “80 percent severed at his neck.” Officer Porter’s trial ended in a hung jury in December; he faces a retrial. Tuesday’s decision allows the officers’ trials to resume. The next one is set to begin April 13, one year and one day after Gray’s fatal arrest.