Cryogenics was my main assignment at first. Working with liquid oxygen, storage/dispense etc. In those days POL was cryogenics, jet fuels, and bulk storage. We were short handed,as always, so I also refueled the bombers. Eventually I had to work in the jungle taking fuel from Navy tankers then pumping that to the flight line. 12 on 12 off is tuff! The weird thing is I loved those jobs!. I was nearly killed only twice but when you're 19 nothing phases you!
In those days Cryogenics, fuels, and bulk storage were the same job. Now they are 3 different career fields and POL is basically refueling aircraft. The Air Force is much different now than it was then.