Firefighter's wearing shorts in fire service?

What are some policies, SOP'S and opinions on wearing shorts in fire service. A few of us at my department are pushing for shorts in our department. Due to such high temp's down here in the south we would much rather be in shorts during at least during the summer months. Our chief is okay with it, and we have an idea of how to wear shorts yet still look professional, so i don't need opinions if it's professional or not. Our problem is we are running into some problems with some of the guys wanting to wear shorts, and some not..very few dont want to wear them, but there are some. Just enough to make it a problem.