31OTU carried out operational maritime patrols of the Western Atlantic from Dartmouth Nova Scotia.
Pilot Officer Clarke was the senior pilot - instructor on such a flight with three newly certified pilots.
Killed includes Clarke: Pilot Officer James Alfred Hackett RCAF pilot J/12097 KIFA Ottawa Memorial Panel 1. Column 4. Sergeant James Mclean Johnson RCAF pilot R/115270 KIFA Ottawa Memorial Panel 1. Column 5. Sergeant Donald Roderick Lagimodiere RCAF pilot R/101688 KIFA Ottawa Memorial Panel 1. Column 5.