"Let us all refrain from making assumptions or drawing conclusions prior to the internal and independent reviews" by the patrol, the State Bureau of Investigation and the district attorney, said Perry, whose agency oversees the Highway Patrol. Authorities haven't said why Trooper Jermaine Saunders fired, and a review of public records shows a few traffic charges against Harris from other states, including damaging his employer's vehicle with his own car after he was fired last year, according to a Denver police report. Deaf people have been stopped by an officer and then shot and killed because the deaf person made a quick move for a pen and pad in his or her coat pocket or glove compartment. Harris' family is raising money for his funeral and will put any extra money toward educating police officers on interacting with hard-of-hearing people and calling for a computerized system to alert officers they are dealing with a deaf driver, according to the family's posting on YouCaring.com. Officials at the chair and tabletop manufacturer said Harris "got very mad and stormed out" after being fired, hitting an employer's vehicle with his own car causing light damage, according to a police report. The National Association of the Deaf works with law enforcement agencies to improve existing training manuals but doesn't have one of its own, CEO Howard Rosenblum said in an email. The NAD supports intensive training for law enforcement officers on dealing with people who are deaf or hard-of-hearing and says some officers should be trained to communicate in American Sign Language.