Problem for many V-force crew chiefs was they were the only non-commissioned crew man. On landing the CC would be just that with the crew providing the semi-skilled labour. On some trips to unsupported bases we used to take two.
Even on supported bases support could be pretty flaky. At Akrotiri (Canberra days) our CC got help from ex-V-force mates in the mess but even so we got involved in removing tail cones, pulling jet pipes to get at fire tec boxes. Made a nonsense of the servicing certificates and I'm fairy not engines.
Once at Offutt, despite it being a supported base, we had a really sooty flown out. Never forget his name. I can just imagining the recruiting sergeant marking his card as he left the office - 'Right, Hammer, ideal for engines.'