WATCH AND WARN: Canada’s Home Front Aircraft Detection Corps Duration: 57 minutes, 30 seconds The fascinating story of ordinary Canadians who answered their country's call for help and volunteered to watch for enemy saboteurs on the home front. Housewives, school children, fishermen and lighthouse keepers scanned the skies and seas for any suspicious sightings of aircraft and vessels - even spies. It was a dangerous time, and our Navy and Merchant Navy were facing enemy U-boat attacks.