I hate it when all the hard work is done and then I fall at the final hurdle. I have the two shapes, the cross in the centre of the circle, but not a clue what to do next. How many extra lines have to be drawn and what length should they be? Wiki suggests lots of lines, but none parallel. I think I will have to bin this one.
I spent most of yesterday absolutely positive that the first across answer was Milligan. It made sense. Machine (mill),U replaced by A in gun, with I as the missing letter. I now realise that was a red herring. Anyone else fall into that trap?