Police officers maintain order and enforce laws and regulations. They respond to emergency calls, patrol public areas, regulate traffic, control crowds, arrest offenders and build community relationships. They are employed by municipal and federal governments and some provincial and regional governments.

Firefighters carry out firefighting and fire prevention activities, and assist in other emergencies. They are employed by municipal, provincial and federal governments and by large industrial establishments that have internal firefighting services. Apprentices are also included in this unit group.

Specialized members of the Canadian Armed Forces provide critical technological support for military armament. They are primarily responsible for the maintenance, inspection and technical support of all Canadian Army equipment. They also follow the military and strategic policies established by the leadership of the Canadian Army, the Royal Canadian Airforce, and the Royal Canadian Navy.