Based on what is now known, I am not sure that we have to accept that PC Collins, PS Woodcock and the others were the first firearms team to enter whf that morning - these officers could be the ones who took part in the training exercise, or alternatively - these officers could have been the ones which did originally enter the farmhouse, and who went back in to carry out a training exercise once Sheila fled upstairs and was shot for the second time, in the bedroom...
Lets get to the bottom of this by asking members of the raid team to disclose their pocketbook entries and lets see when they got back to base?