Can remember tanking from a Vulcan over RAFG in the 80s. As we closed up to contact, my back-seater and I noticed what looked like half a wooden garden shed around the HDU assembly. It might have looked like something out of B&Q, but it certainly did the business. After the tanking we indulged in some "affil" with the great tin triangle from HL down to LL - what a magnificent beast.....