Josiah Mecone

So. I'm relatively new to this game and I have a question. Is there a way in freeplay mode to limit all the calls to Firefighting and EMS calls? I like Police Callouts but I prefer doing firefighting and EMS missions over anything else and it gets overwhelming when I'm bombarded with multiple calls in different categories

So i have the steam version of 911FR (But i'll refer to it as emergency 4 in this topic). When ever i go into game the interface shows up fine the actual playing field is grey and shows no terrain what so ever Just grey. I took a screenshot in game: http://i.imgur.com/05yYl0Z.jpg