The man who supplied his brother with the gun that killed an 8-year-old girl last year in Northeast Washington was sentenced yesterday to a 20-year prison term, nearly as much time as his brother was given. D.C. Superior Court Judge Ann O'Regan Keary told Ricardo Hall, 24, that he had played a key role in the killing even though it was his younger brother who fired the gun that killed Chelsea Cromartie on May 3 as she watched television in her aunt's home. "You do... (GunPolicy.org)