As authorities in Tampa announced the arrest of a suspected serial killer last week, hearing-impaired people tuning into the news conference got quite a different message from an American Sign Language interpreter. Instead of getting a rundown from Tampa Police Chief Brian Dugan on the timeline of the four shootings and what led up to the arrest of 24-year-old Howell Emanuel Donaldson III, interpreter Derlyn Roberts made signs that were gibberish, according to those who watched in confusion. "She sat up there and waved her arms like she was singing Jingle Bells," Rachell Settambrino, who is deaf and teaches American...