The Air Force came up and kinda admitted that manning for Civil Engineer squadron is hit-and-miss currently. So they were wondering....if some contingency started up and you had to fill 'billets'....could you take finance, medical and logistical guys....to do runway repair and those war-time functions that Civil Engineer personnel would have done.
I just sat there laughing over this mentality. Already in WW II, this concept was proven.
But the AF went off and flew around a hundred folks into an exercise to test the idea.
Other than heavy equipment operators....almost all of the wartime functions in Civil Engineering's 'list'.....could be done by marginally qualified people. You might need two days to explain functions, and safety concepts....but it's simply not rocket science.
Now....if you stood up and talked about electrical power work, power-production, or heating/AC work....that'd be a different story, and you'd have to have qualified people.