Firestreak, if that was a T4, 1966-67 ish that would have been the 360 aircraft from Watton when the observer(RN) ejected when a practice EFATO (again) went TU. Sadly the observer, Lt Norman Lake RN, was killed. Different aircraft on the fleet had different hatch fits (frangible or solid) and different hatch switchery. Norman ejected through a solid hatch and was killed. Many years later I was OC Admin at Wyton when similarly a practice EFATO went wrong and the station commander and the instructor and navigator were killed.. The similarity of the two accidents was chilling.