I believe that there should be more SES vehicles, or at least change what the basic SES truck can do, as at least in SA, the basic truck can do high angle rescue, tree work, and light/medium rescue, except for things such as car crash, which there are heavy rescues for, which are in the game. There are also cars, like land cruisers, which are used for tree downs, and light rescue. If I have gotten anything wrong, please correct me
Edit: There are also logistics vehicles, that are used for transporting equipment, etc