Reverting to the film, I was surprised to note that the "cookie" has the "windmill" safety caps on the fuses wired up (6.47), but when in position on the rack, the safety wires are removed (8.30), so the bomb is 'live' from then on.
That raises a question: if you need to dump the bomb load to "lighten ship" in emergency, there is no way to return the bomb to 'safe'. No problem over the sea, fair enough over enemy territory, but over friendly territory ? - and even more, over the UK ?
In Burma, we dropped 250 GP and 500 GPs using a "fuse-link" system described in my Post (Page 134 #2680 on "Gaining a RAF Pilots' Brevet in WWII" Thread). It seems strange if no such method was in use back at home.
I hope we have a bomb-aimer or armourer in earshot who can set me right on this.
D.