G4S Aviation provides pre-board, hold-baggage and non-passenger screening services at twenty-one airports including Vancouver International Airport (YVR) in the Pacific Region (British Columbia and the Yukon Territory) of Canada in partnership with the Canadian Air Transport Security Authority (CATSA). In Toronto, G4S provides a highly trained team of security personnel at Billy Bishop Airport. In Halifax, G4S contract with Halifax Stanfield International Airport to provide uniformed security services, parking and curbside services. In Eastern Canada, G4s provides security service to Termont Montréal, a container terminal operator based out of the Port of Montréal.

Reporting to the Service Delivery Manager, the Screening Officer is responsible for ensuring that the traveling public, their personal belongings, and the carry-on baggage and items they have with them are screened before they enter the sterile area of the airport. This will be accomplished by using metal detection equipment, X-ray equipment, and explosive detection equipment, as well as physical search techniques to search baggage, items and personal belongings. As this is a unionized environment, shift assignments are bid by seniority and can be any day of the week (including Saturday, Sunday, and holidays) and starting and ending at any time during the day.