"15-year-old cadet Tommy McMordie from Luton Air Training Corps (ATC) in a Wellington bomber's rear turret at No 12 Operational Training Unit (OTU) at Chipping Warden, Northamptonshire, 17 September 1944." Boys from the Luton Air Training Corps (ATC) were treated to a day at No 12 Operational Training Unit (OTU) at Chipping Warden, Northamptonshire, on 17 September 1944. Here, 15-year-old Cadet Tommy McMordie trying the rear turret of one of the unit's Wellingtons for size.