Replaces the role selection screens with new ones that are a grid combination of 4 different pictures showing the different vehicles and characters for each of the departments.
Replace 'EMS01' in 'sharedassets2.assets'.
Replace 'FD01' in 'sharedassets2.assets'.
Replace 'PD01' in 'sharedassets2.assets'.
Replace 'FD01' in 'sharedassets2.assets'.
Replace 'PD01' in 'sharedassets2.assets'.