I know you do. You go out from time to time to do checks, make repairs, or change oil. Many times the work you do is in the cabin not outside in the elements. From my perspective that is not the same as being outside all day long moving literally TONS of bags and freight. As a whole you don't have near the workload as Fleet. It certainly is not nearly as physical. That is why you see so few career clerks without knee, hip, back, and shoulder operations. That's OK you are paid for your expertise and license not for your back, but to compare the time a mechanic spends out in the elements vs a clerk is laughable. It's not even close.