Where can I find information on the operating requirements for an indoor shooting range?

I want to open an indoor shooting range, I am ex-military and i want to use an aspect of what i have learned to turn a profit. I can't seem to find any information on the subject. It is like it is a secret industry or something. I am looking for regulatory information in regards to Indiana I tried the .gov website with no luck.Where can I find information on the operating requirements for an indoor shooting range?First I would check in at the local or county police departmnt. Find out if there is a need in the area for such a business. You could also go to a local sporting goods store and get information their. Good Luck.