Kinloss, winter, mid 60's. Stores run out of de-icing fluid for the Shackleton, which had a system of pumping the fluid out of porous strips on the leading edge of the wings and tailplane.
Supply Officer could not understand why there was not enough. He had (allegedly) looked in the Autumn at how much had been used in the previous quarter and ordered accordingly for the next quarter.
Presumably to him it was just another Section/ Ref. No.