Should paraplegics be allowed to work as police and firefighters? Why or why not?

If they should be allowed to work as police and firefighters, should they be paid the same as their able-bodied counterparts?
If not paraplegics, what about diplegics or amputees? Same follow up questions apply.
Should paraplegics be allowed to work as police and firefighters? Why or why not?
Should paraplegics be allowed to work as police and firefighters? Why or why not?
Should paraplegics be allowed to work as police and firefighters? Why or why not?
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