Took off from Abbottsford on a night bombing practice mission to the Boundary Bay Bombing Range, south of Vancouver BC.
During the mission a practice bomb fouled the bomb-bay and exploded. Two crew, plus the pilot who were unable to escape went down with the aircraft. It crashed near Point Roberts, Washington, USA.
Killed includes Calloway: Sergeant Henry Charles Barr RCAF R/291559 KIA Brookside Cemetery, Winnipeg, Mil. Sec. Lot 1966. F/Lt Samuel Leslie Bowhay RCAF J4744 pilot KIA, Three Hills Cemetery Alberta, Plot 12. Block C. Grave 1.