V-Force chiefs too
In my experience V-Bomber crew chiefs were the backbone of the Sqdn servicing crew. When 617 re-formed with Vulcans the crew chiefs were often working 18 hrs a day. The a/c could not be moved without the c/c present or IIRC even ground power could not be applied. And, of course, they were present whenever the a/c was crewed up to fly.
Apologies for thread drift.