I would contact your police department about whether or not they are allowed to even discharge firearms in your area. Most areas...even here in redneck rural PA have laws on the books about shooting in a residential area. It usually applies to how far away from homes they are. I would start there...and explain the situation. I don't believe it would be legal unless they could prove the cats were killing livestock which MAY apply to roosters and chickens I don't know for sure. I know that livestock producers are allowed to shoot dogs that are harrassing or killing livestock. I don't know about cats.

Denyce